★ SOSA for Hyderabad Businesses
Yes, and the cause is almost never the machine - an older central system was balanced once on a commissioning sheet and has drifted ever since through slipped belts, loaded filters, nudged dampers and partitions the ducts never knew about, so uneven fragrance is simply a map of uneven air, which makes this a balancing job before it is a fragrance one
★ ★ ★ ★ ★
★★★★★
"Our old water diffuser couldn't fill the living-dining. This one does the whole floor and you can't hear it running."
SOSA Vaayu · large home
★★★★★
"The app scheduling is the best part - strong in the mornings, gentle in the evening. Clinic feels calm all day."
SOSA Vaayu · wellness studio
★★★★★
"Paired it with the SOSA hotel oils. The projection is genuinely lobby-strength - nothing like a plug-in."
SOSA Vaayu · workspace
★★★★★
"My reception now smells like a five-star lobby. Guests comment on it before they even reach the desk."
SOSA Vaayu · lobby scenting
★★★★★
"Zero dampness, which was my worry in monsoon. The mist is completely dry and the scent carries across the whole salon."
SOSA Vaayu · spa & salon
★★★★★
"Set the timer once and forgot about it. Runs only during store hours, refills last weeks. Exactly what I wanted."
SOSA Vaayu · showroom
★★★★★
"Our old water diffuser couldn't fill the living-dining. This one does the whole floor and you can't hear it running."
SOSA Vaayu · large home
★★★★★
"The app scheduling is the best part - strong in the mornings, gentle in the evening. Clinic feels calm all day."
SOSA Vaayu · wellness studio
★★★★★
"Paired it with the SOSA hotel oils. The projection is genuinely lobby-strength - nothing like a plug-in."
SOSA Vaayu · workspace
★★★★★
"My reception now smells like a five-star lobby. Guests comment on it before they even reach the desk."
SOSA Vaayu · lobby scenting
★★★★★
"Zero dampness, which was my worry in monsoon. The mist is completely dry and the scent carries across the whole salon."
SOSA Vaayu · spa & salon
★★★★★
"Set the timer once and forgot about it. Runs only during store hours, refills last weeks. Exactly what I wanted."
SOSA Vaayu · showroom
★ Sized to the visitor-facing zone, in the register the business runs
SOSA AngaanOne visitor-facing volume above about 3,000 sq ftView ₹25,999
SOSA VaayuA connected client floor to about 3,000 sq ftView ₹11,999
Mountain BreezeThe register every floor carriesView ₹849
✓ One register in the visitor-facing zone only - entrance, reception and the waiting area - set from the furthest seat at the end of the longest wait and then key-locked ✓ Closed treatment rooms and consultation cabins are never scented, a named seat is kept genuinely fragrance-free and offered rather than requested, and the visitor's preference overrides any plan ✓ Made in India · independent, not affiliated with any hotel · a portion funds girl-child education
Founder Diaries · Commercial Scenting Guides · Hyderabad
How do I see the drift without instruments? Tape a light paper ribbon under every supply diffuser on the floor and photograph each one. A ribbon standing out flat and a ribbon barely moving is the whole diagnosis.
Does turning the machine up fix a starved room? No. A starved room gets a little more of almost nothing, while the over-supplied rooms get a lot more of too much, so the unevenness gets worse rather than better.
See the SOSA Vaayu Book a scenting plan
Facts verified 9 September 2026 against the live SOSA product pages: the SOSA Vaayu (₹11,999) is a waterless cold-air nebuliser rated to 1000m³, described by the manufacturer as approximately 2,000-3,000 sq ft, with a 400ml refillable tank lasting roughly 75-90 days depending on intensity and run hours, Bluetooth app and onboard button control, 1h/4h/8h/24h timers, adjustable intensity, operation under 38dB, DC 12V/1A at 5W, freestanding or wall and HVAC mounting, auto-stop and key-lock, and CE, RoHS and SGS certification - electrical and compliance marks only. Being waterless it adds no moisture and leaves no residue on paper, screens or documents; refill supply should be confirmed with SOSA. The SOSA Angaan (₹25,999) is an HVAC nebulising diffuser rated to 3,000m³, roughly 8,000-10,000 sq ft, with an 800ml reservoir, metal body, programmable schedules and operation under 42dB. The SOSA Sukoon (₹1,899) is a 500ml water-based ultrasonic diffuser for a single room of roughly 270-320 sq ft, and the SOSA Boond (₹899) is its compact equivalent; both use the water-based Hotel Collection fragrance (15ml from ₹299, 100ml ₹999, 300ml ₹1,799), which is made for ultrasonic diffusers and is not reed diffuser oil. SOSA reed diffusers - Morning Freshness (₹749 / ₹1,249) and Mountain Breeze (₹849 / ₹1,349), or the two together as the Fresh & Grounded duo (₹1,548 / ₹2,548) - are alcohol-free and phthalate-free, with a 50ml bottle lasting 6-8 weeks and a 130ml bottle 14-18 weeks. Ambient fragrance in a commercial space is an interior and hospitality decision only. SOSA makes no claim that it treats, relieves, prevents or improves any medical, dental or psychological condition, that it makes anyone feel calmer, more comfortable or more confident, that it affects recovery, patient comfort or any clinical outcome, or that it affects footfall, walk-ins, enquiries, bookings, conversions, sales, average spend, dwell time, customer retention or revenue. It does not remove or reduce any odour in the air, and it is never a substitute for ventilation, cleaning, housekeeping or fresh-air exchange - an office with a persistent smell has a source to find and fix first. Closed treatment rooms, consultation cabins and any closed one-to-one room are never scented, because the person inside cannot leave and did not choose to be there. A named seat away from the source is kept genuinely fragrance-free in the reception or waiting area and offered rather than waiting to be requested. The visitor's preference overrides any plan on this page, and where a customer, patient or member of staff is sensitive to fragrance the correct response is to reduce or switch off. The hotel-inspired scents are SOSA's own original interpretations; SOSA is an independent brand and is not affiliated with, or endorsed by, any hotel named for reference. Coverage, fragrance usage and running cost depend on the space, settings and hours of use, and are confirmed on a consultation. Prices and availability are subject to change - see the live product pages.
Yes - and the cause is drift, not the machine. The system was balanced once, at handover, and has moved ever since. Uneven fragrance is a map of uneven air, so this is a balancing job first.
Quick answers — read this first
Why is the fragrance strong in one room and absent in another? Because the air volumes are. An older central system has drifted from the balance it was commissioned to, so some rooms are over-supplied and some are close to starved.How do I see the drift without instruments? Tape a light paper ribbon under every supply diffuser on the floor and photograph each one. A ribbon standing out flat and a ribbon barely moving is the whole diagnosis.
Does turning the machine up fix a starved room? No. A starved room gets a little more of almost nothing, while the over-supplied rooms get a lot more of too much, so the unevenness gets worse rather than better.
The short answer
Short answer: yes - because an older system has drifted from its commissioned balance, so some rooms get far too much air and some almost none. Uneven fragrance is a map of uneven air.
The pick: a balancing visit first. Then an SOSA Angaan (₹25,999) on the duct, or a SOSA Vaayu (₹11,999) per zone.
Next step: tape a ribbon under every diffuser this afternoon and photograph the row. Or ask for a scenting plan for your space.
In this guide
A ribbon of paper taped under each diffuser will tell you in ten minutes what the machine could never tell you in a month.
Sized to the visitor zone - tap to see each
One connected volume, on the duct
SOSA Angaan · ₹25,999
Per zone, below about 3,000 sq ft
SOSA Vaayu · ₹11,999
Send the floor plan
Free scenting plan for your space
Straight answer
Can an older central AC system cause uneven fragrance distribution in a Begumpet building?
Yes, routinely - and the cause is worth naming precisely, because it is not the fragrance, not the machine and not the size of the floor. It is drift. Every central system was balanced exactly once, at handover, by somebody with a flow hood and a commissioning sheet, who set each damper so that each room received the volume of air the design called for. That sheet was true on the day it was signed and has been becoming less true every day since. Belts slip and stretch, so the fan turns slower than it was set to. Filters load, so resistance rises across the whole system and the rooms at the end of the longest duct runs lose out first. Dampers get nudged - by a technician chasing a complaint about one cold corner, by somebody who wanted a quieter meeting room, by a tenant who moved a diffuser when the ceiling was reworked. Grilles get painted over. And the biggest one in an older Begumpet building: partitions. Twenty years of tenants have divided and subdivided a floor that was ducted as an open plate, so there are now rooms with two supply diffusers and no return at all, and rooms with a return and nothing supplying them. Air does not distribute itself politely across a floor plan. It goes where the resistance is lowest, which after two decades of drift is nowhere near where the drawing said. Once you see that, uneven fragrance stops being mysterious. A nebuliser on the supply side puts a given amount of fragrance into a given volume of moving air, and the air then delivers it in exactly the proportions it delivers everything else. The mechanical layout is the distribution plan whether anybody drew it that way or not. The room that always feels stuffy is the starved room, and it will also be the room with no register in it; the room people find cold is the over-supplied one, and it will also be the room somebody describes as too strong. Which hands you the test, and it needs no instruments. Cut a dozen light paper ribbons, tape one under the edge of every supply diffuser on the floor, and photograph each one from the same distance. Lay the photographs side by side. A ribbon held out almost flat and a ribbon barely lifting are the same system, and the gap between them is your problem, in a picture, for the cost of a roll of tape. Take that set of photographs to the AC contractor, because it converts an argument about smells into a conversation about air volumes, which is a conversation they can act on. The fix is sequenced and boring: new filters, belt tension checked, dampers re-set against a fresh set of readings, and a return path created for any room that has been partitioned away from one. Only then is there any point specifying a machine. And note what does not work: turning the output up. A starved room receives a fraction more of almost nothing while the over-supplied rooms receive far more of what was already too much - which is the general reason stronger is rarely the answer. After balancing, an SOSA Angaan at ₹25,999 goes on the supply serving the visitor-facing zone only, and a SOSA Vaayu at ₹11,999 handles a single connected air mass below that size. Fragrance is an ambience decision like lighting or seating: it does not remove or reduce anything in the air, it treats nothing and relieves nothing, and SOSA makes no claim that it does. It works alongside ventilation, cleaning and housekeeping, never instead of them. Closed meeting rooms and consultation cabins are never scented, which is also why the duct that feeds them must not be the duct that carries the register. A named seat away from the source is kept genuinely fragrance-free and offered rather than requested, and the visitor's preference overrides any plan. Made in India, and a portion of every order supports girl-child education through Nanhi Kali.
Yes. An older system was balanced once at handover and has drifted through slipped belts, loaded filters, nudged dampers and new partitions, so some rooms are over-supplied and some starved. Tape a ribbon under every diffuser and photograph the row.
After balancing: SOSA Angaan at ₹25,999 on the duct, or a SOSA Vaayu at ₹11,999 per air mass.
See the SOSA Vaayu ₹11,999 Ask for a scenting plan for your space
The honest ladder
One source for the visitor zone, sized to the floor
What to buy, and for which space
The honest options for the visitor-facing zone, sized to the floor rather than to the ambition. The images link to the product pages so every figure here can be checked.
One connected visitor-facing volume above about 3,000 sq ft, on the duct
SOSA Angaan
HVAC nebulising diffuser rated to 3,000m³ - roughly 8,000-10,000 sq ft - with an 800ml reservoir, a metal body, programmable schedules and operation under 42dB. Above about 3,000 sq ft of one connected visitor-facing volume this is the step rather than a second Vaayu, because two machines in one air mass drift apart. Critically, it goes on the supply side of the air handling that serves the visitor-facing zone only - never on a run that also feeds the treatment rooms or consultation cabins, which is the commonest way a zoning plan fails.
₹25,999
A connected reception, waiting area and corridor of ~1,500-3,000 sq ft
SOSA Vaayu
Waterless cold-air nebuliser rated to 1000m³ - about 2,000-3,000 sq ft - on one unit. In a clinic, salon or showroom its value is control rather than reach: the key-lock holds the level the furthest waiting chair was judged to, so it survives every shift and every new receptionist, and the 1h/4h/8h/24h timer keeps it on opening hours rather than saturating an empty room overnight. Waterless, so it adds no moisture and leaves no residue on stock, mirrors, screens or displays. 400ml tank, roughly 75-90 days depending on intensity and run hours, under 38dB, wall or HVAC mount.
From ₹11,999
Five ways a commissioned balance drifts
The sheet was true the day it was signed. Everything since has been quietly moving air away from where the drawing put it.
1
Belts
The fan turns slower than it was set to
Belts stretch and slip over years, so total delivered volume falls across the whole system while every damper still sits where it was set for the original fan speed.
Rule: the longest duct runs lose first.
2
Filters
Resistance rises, distribution skews
A loaded filter does not reduce every room equally. It reduces the rooms already furthest along the duct most, which is why the same two rooms always complain.
Test: ask when the filters were last actually changed.
3
Dampers
Nudged by whoever chased a complaint
Two decades of technicians adjusting one damper to fix one cold corner leaves a system that satisfies nobody and matches no sheet anywhere in the building.
Rule: re-set against fresh readings, not memory.
4
Partitions
Rooms the ductwork never knew about
A floor ducted as an open plate and then subdivided for twenty years has rooms with two supplies and no return, and rooms with a return and nothing feeding them.
Rule: a room with no return cannot be scented evenly.
5
The ribbon
Twelve strips of paper and a camera
Tape a light ribbon under every supply diffuser, photograph each from the same distance, and lay the pictures side by side. Flat against barely lifting is the whole diagnosis.
Test: take the photographs to the AC contractor.
The SOSA principle
A nebuliser puts a fixed amount of fragrance into moving air, and the air then delivers it in exactly the proportions it delivers everything else. Uneven fragrance is not a fragrance fault. It is a picture of your air balance.
Which is why the room people call stuffy and the room somebody calls too strong are the same finding, read from the two ends of one drifted system.
Old central systems, question by question
What drifts, how to see it without instruments, and what to fix before anything is specified.
The SOSA Hyderabad table
Uneven distribution on an older system
| The question | The answer |
|---|---|
|
Is uneven fragrance a machine problem?
|
Rarely. A nebuliser on the supply puts a fixed amount into moving air, and the air distributes it in the same proportions it distributes everything else. |
|
What actually drifts over twenty years?
|
Belt tension, filter loading, damper positions nudged by technicians chasing complaints, painted grilles, and partitions the ductwork never knew about. |
|
How do I see it without instruments?
|
Tape a light paper ribbon under every supply diffuser, photograph each from the same distance, and lay the pictures side by side. |
|
Can I fix it by turning the output up?
|
No. The starved room gets a fraction more of almost nothing while the over-supplied rooms get far more of what was already too much. |
|
What comes after balancing?
|
An Angaan (₹25,999) on the supply serving the visitor zone only, or a Vaayu (₹11,999) for a single connected air mass below that size. |
The design-stage version is planning diffusion with the HVAC, the source version is the five-line source sheet, and the one-fragrance-many-systems version is one register across different HVAC. SOSA makes no claim that fragrance removes or reduces anything in the air.
One register, the visitor-facing zone only, set from the furthest seat
SOSA Vaayu ₹11,999 waterless, key-locked and timed to opening hours; Mountain Breeze ₹849 or Morning Freshness ₹749 as the register. Send the floor plan with the closed rooms and the entrance marked and we will return it with the placement and the fragrance-free seat.
A dozen paper ribbons and a camera convert an argument about smells into a conversation about air volumes - and an AC contractor can act on the second one.
— Sonal Sahani, SOSA
Sized to the floor
The visitor zone gets one source; closed treatment and consultation rooms get none
The SOSA Hyderabad specification
One register, delivered at whatever size the visitor-facing zone is, with the rule that travels alongside each product. Made in India, and a portion of every order supports girl-child education through Nanhi Kali.
The SOSA Hyderabad specification
What goes where in a clinic, salon, showroom or office
| Product | The space it fits | The rule that travels with it | Price |
|---|---|---|---|
|
SOSA Vaayu
|
One connected visitor-facing air mass up to about 3,000 sq ft | One machine per air mass, each set from its own furthest chair and key-locked; never two in one volume sharing a guess | ₹11,999 View → |
|
SOSA Angaan
|
One connected visitor-facing volume above about 3,000 sq ft | On the supply side of the air handling that serves the client zone only - never a run that also feeds the dealing floor | ₹25,999 View → |
|
SOSA Mountain Breeze Reed Diffuser
|
The register every floor and every branch carries | One register across the whole firm - two registers in two offices is two smells and no identity | ₹849 / ₹1,349 View → |
 SOSA Morning Freshness Reed Diffuser
|
The same question in a white, glazed office | Cool citrus with no warmth; chosen once for the brand, not per branch or per desk | ₹749 / ₹1,249 View → |
 SOSA Sukoon
|
A closed reception or waiting area inside a larger office | High shelf, on low, opening hours only; a room product inside a zoned plan | ₹1,899 View → |
A SOSA Sukoon (₹1,899) is the water-based rung for a single enclosed reception or client lounge of roughly 270-320 sq ft in a dry room, and a Boond (₹899) for a single cabin; both run on the water-based Hotel Collection fragrance (from ₹299), which is not reed diffuser oil and is not interchangeable with it. Above about 3,000 sq ft of one connected volume the step is one SOSA Angaan (₹25,999) on the duct, not a second Vaayu. Closed treatment rooms, consultation cabins and any closed one-to-one room are never scented - the person inside cannot leave and did not choose to be there - and that is achieved by placement and doors rather than by a lower setting. A named seat away from the source is kept genuinely fragrance-free and offered at the desk rather than waiting to be asked. Fragrance is an ambience decision like lighting or seating: it does not remove or reduce anything in the air, it treats nothing and relieves nothing, it makes no contribution to what a visitor buys, books or decides, and it works alongside ventilation, cleaning and housekeeping, never instead of them. The visitor's preference overrides any plan. Ask for a scenting plan for your space and send the floor plan with the closed rooms and the entrance marked.
SS
ISIPCA
Versailles
Versailles
A note from Sonal
Yes, routinely, and the cause is worth naming precisely because it is not the fragrance, the machine or the size of the floor. It is drift. Every central system was balanced exactly once, at handover, by somebody with a flow hood and a commissioning sheet who set each damper so each room got the volume the design called for. That sheet was true the day it was signed and has been less true every day since. Belts slip, so the fan turns slower than it was set to. Filters load, so resistance rises and the rooms at the end of the longest runs lose out first. Dampers get nudged by technicians chasing one cold corner. Grilles get painted over. And the big one in an older building: twenty years of tenants have subdivided a floor that was ducted as an open plate, leaving rooms with two supplies and no return, and rooms with a return and nothing feeding them.
Air does not distribute itself politely across a floor plan. It goes where resistance is lowest, which after two decades of drift is nowhere near where the drawing said. Once you see that, uneven fragrance stops being mysterious: a nebuliser puts a fixed amount into moving air and the air delivers it in exactly the proportions it delivers everything else. The room that always feels stuffy is the starved room and will also be the room with no register in it. The room people find cold is the over-supplied one and will also be the room somebody calls too strong. So run the ribbon test: tape a light paper ribbon under every supply diffuser, photograph each from the same distance, and lay the pictures side by side. Flat against barely lifting is the whole diagnosis, for the price of a roll of tape, and it turns an argument about smells into a conversation about air volumes.
Then the boring sequence: new filters, belt tension checked, dampers re-set against fresh readings, and a return path created for any room partitioned away from one. Only then is there any point specifying a machine, and note what does not work - turning the output up. The starved room gets a fraction more of almost nothing while the over-supplied rooms get far more of what was already too much. After balancing, an SOSA Angaan at ₹25,999 on the supply serving the visitor-facing zone only, or a SOSA Vaayu at ₹11,999 for a single connected air mass. Fragrance does not remove or reduce anything in the air, it treats nothing and relieves nothing, and I make no claim that it does. It works alongside ventilation, cleaning and housekeeping, never instead of them. Closed meeting rooms and consultation cabins are never scented, which is why the duct feeding them must not be the duct carrying the register. A named seat is kept genuinely fragrance-free and offered rather than requested, and the visitor's preference overrides any plan. Made in India, and a portion of every order supports girl-child education through Nanhi Kali.
Frequently asked questions
Can an old central AC system make fragrance uneven between rooms?
Yes. The system was balanced once at handover and has drifted since, so some rooms are over-supplied with air and some are close to starved.
What causes the drift?
Slipped belts, loaded filters, dampers nudged by technicians chasing complaints, painted grilles, and partitions added to a floor the ductwork never knew.
How can I see the imbalance without instruments?
Tape a light paper ribbon under every supply diffuser, photograph each from the same distance, and compare the pictures side by side.
Will increasing the machine output even things out?
No. The starved room gets slightly more of almost nothing while the over-supplied rooms get far more of what was already too much for them.
What should be fixed before a machine is specified?
Filters, belt tension, damper settings re-set against fresh readings, and a return path for any room that has been partitioned away from one.
Tape a ribbon under every diffuser
SOSA — Studio Scenting a map of your air
An older central system was balanced once, at handover, and has drifted ever since through slipped belts, loaded filters, nudged dampers and partitions the ductwork never knew about. Uneven fragrance is simply a picture of that drift, because air delivers a register in the same proportions it delivers everything else. Twelve paper ribbons and a camera will show it in ten minutes, and the fix is filters, belts, dampers and a return path - not more output. Made in India, and a portion of every order supports girl-child education through Nanhi Kali.
Ask for a scenting plan for your space → SOSA Vaayu · ₹11,999
One more look at the range
Continue the read
More from SOSA
- SOSA Vaayu (₹11,999)
- SOSA Mountain Breeze Reed Diffuser (₹849)
- Plan with the HVAC, not after opening
- Older building: the source list
- Why Monday morning smells stale
- One fragrance, different HVAC
- Drainage and HVAC come first
- Old property, high ceilings
- Crowded evenings: why stronger fails
- Ask us: Ask for a scenting plan for your space
- Brand: Founder story — why SOSA exists
Editorial standards & sources
About this guide: Written by Sonal Sahani, ISIPCA Versailles-trained founder and perfumer at SOSA Home & Body. Product recommendations reflect the SOSA range; the planning advice applies to any brand.Facts verified 9 September 2026 against the live SOSA product pages: the SOSA Vaayu (₹11,999) is a waterless cold-air nebuliser rated to 1000m³, described by the manufacturer as approximately 2,000-3,000 sq ft, with a 400ml refillable tank lasting roughly 75-90 days depending on intensity and run hours, Bluetooth app and onboard button control, 1h/4h/8h/24h timers, adjustable intensity, operation under 38dB, DC 12V/1A at 5W, freestanding or wall and HVAC mounting, auto-stop and key-lock, and CE, RoHS and SGS certification - electrical and compliance marks only. Being waterless it adds no moisture and leaves no residue on paper, screens or documents; refill supply should be confirmed with SOSA. The SOSA Angaan (₹25,999) is an HVAC nebulising diffuser rated to 3,000m³, roughly 8,000-10,000 sq ft, with an 800ml reservoir, metal body, programmable schedules and operation under 42dB. The SOSA Sukoon (₹1,899) is a 500ml water-based ultrasonic diffuser for a single room of roughly 270-320 sq ft, and the SOSA Boond (₹899) is its compact equivalent; both use the water-based Hotel Collection fragrance (15ml from ₹299, 100ml ₹999, 300ml ₹1,799), which is made for ultrasonic diffusers and is not reed diffuser oil. SOSA reed diffusers - Morning Freshness (₹749 / ₹1,249) and Mountain Breeze (₹849 / ₹1,349), or the two together as the Fresh & Grounded duo (₹1,548 / ₹2,548) - are alcohol-free and phthalate-free, with a 50ml bottle lasting 6-8 weeks and a 130ml bottle 14-18 weeks. Ambient fragrance in a commercial space is an interior and hospitality decision only. SOSA makes no claim that it treats, relieves, prevents or improves any medical, dental or psychological condition, that it makes anyone feel calmer, more comfortable or more confident, that it affects recovery, patient comfort or any clinical outcome, or that it affects footfall, walk-ins, enquiries, bookings, conversions, sales, average spend, dwell time, customer retention or revenue. It does not remove or reduce any odour in the air, and it is never a substitute for ventilation, cleaning, housekeeping or fresh-air exchange - an office with a persistent smell has a source to find and fix first. Closed treatment rooms, consultation cabins and any closed one-to-one room are never scented, because the person inside cannot leave and did not choose to be there. A named seat away from the source is kept genuinely fragrance-free in the reception or waiting area and offered rather than waiting to be requested. The visitor's preference overrides any plan on this page, and where a customer, patient or member of staff is sensitive to fragrance the correct response is to reduce or switch off. The hotel-inspired scents are SOSA's own original interpretations; SOSA is an independent brand and is not affiliated with, or endorsed by, any hotel named for reference. Coverage, fragrance usage and running cost depend on the space, settings and hours of use, and are confirmed on a consultation. Prices and availability are subject to change - see the live product pages.