Serta
Serta iComfort Aspire Plush 14" Mattress
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The honest verdict: the Aspire Plush 14" is the soft end of Serta's iComfort line, built for one sleeper above all, the side sleeper whose shoulder and hip need room to go. At about a 3 out of 10 it is a genuine deep cradle. You settle into this bed, not on top of it, while Serta's 5-ZoneResponse support keeps your spine from folding in the middle. If you have woken with a sore shoulder on a "supportive" bed that was just too firm, this is the Serta to lie on first.
What it is made of, and what that does for you
- A deep plush surface, about 3 out of 10. More give up top than the medium model: your shoulder and hip sink in instead of bracing against the bed. That is the whole point of the plush tune, and side sleepers feel it fast.
- Graphite-infused Perfect Conform memory foam and EverCool Supreme. About an inch of graphite-infused memory foam sits up top to cradle pressure points while it carries heat away, Serta's answer to the knock that plush foam sleeps hottest.
- 5-ZoneResponse support foam. Five firmness zones tuned for full-body spinal alignment: firmer under the lumbar and thighs, softer under the shoulders and hips. Plush without this zoning is just a bed you sink into; this one supports while it cushions.
- A 7-inch Serta foam core, 14 inches total. The dense base does the structural work and soaks up motion, so a partner's 2 a.m. shift does not travel to your side. Measure 14 inches against your frame and deep-pocket sheets first.
- A clean, certified build. CertiPUR-US certified foams, no fiberglass anywhere, 100% assembled in the USA, and a 10-year limited warranty.
What you notice in the first few minutes
Lie down on your side and the surface gives way under your shoulder first, then your hip, the two places side sleeping loads hardest, with no pushback against you. The CoolFeel cover reads cool to the touch before your weight settles. The quiet part is underneath: you settle into the cushion but do not keep sinking, the difference between this and a cheap plush bed that turns into a hammock by week two.
Who it is not for, and the Mattress Overstock team would rather say so now
- Back and stomach sleepers. A 3-out-of-10 plush will likely let your hips dip, and you will wake up feeling it. The firmer Aspire Medium 14" is the better call.
- Heavier sleepers who want lasting support. The deeper you sink, the more a plush all-foam bed asks of its core over time. Well above average weight? A firmer model or a coil hybrid will hold up better.
- Anyone chasing a cool, springy feel. This is the soft, sink-in end of memory foam. It fights heat well for what it is, but if "cool and responsive" is the brief, a hybrid is the honest answer.
How it compares to its firmer twin
The Aspire Plush and the Aspire Medium 14" are the identical build with two surfaces: same graphite-cooled comfort layers, same 5-ZoneResponse zoning, same 7-inch Serta foam core. The Plush is tuned soft for a deep side-sleep cradle; the Medium is the firmer, more universal feel for back and combination sleepers, and the compromise to test if you and a partner pull in different directions. Both sit on a platform, slats, a box spring, or an adjustable base, so you can raise your head or your legs without voiding a thing.
Why buy it from Mattress Overstock
Locally owned and serving Kentucky since 2012, with five showrooms you can walk into with no appointment, in Lexington (on Nicholasville Road), Georgetown, Somerset, London, and Richmond. Plush is the feel people most often get wrong online. What reads as "cloud-like" in a review can feel like "no support" by morning, and you cannot tell which from a screen. Come lie on it in your real side-sleeping position, next to the Medium.
You get a full 120-day comfort guarantee; if it is not right, you exchange it for store credit toward any bed of equal or greater value, no cash refund, but no restocking-fee games either. Free local delivery, and the team hauls your old mattress away. Everyone on the floor is paid the same regardless of which brand you buy, so if the plush is not your bed, you will hear it. That straight talk is a big part of why shoppers rate the five showrooms about 4.7 stars across more than 500 Google reviews. Select your size to see the live Mattress Overstock price, or compare it against its firmer twin in the full Serta lineup, then settle it on your side in Lexington in five quiet minutes.
What makes this mattress different
A true plush cradle (3/10)
The soft end of the iComfort line: deep enough that your shoulder and hip settle in, tuned for side sleeping above all.
Graphite-cooled comfort layers
Graphite-infused Perfect Conform memory foam and EverCool Supreme cradle pressure points while moving heat away: cooling tuned for a plush surface that would otherwise sleep warm.
5-ZoneResponse keeps you supported
Five firmness zones for full-body spinal alignment, firmer under the lumbar and thighs, softer at the shoulders and hips, so this soft bed still holds your spine straight instead of letting you bottom out.
Quiet for couples
The 7-inch Serta foam core absorbs movement before it crosses the bed, so a restless partner's 2 a.m. shift does not reach your side.
Adjustable-base ready
Works on a platform, slats, a box spring, or an adjustable base, so you can raise your head or legs without giving anything up.
A clean, certified build
CertiPUR-US certified foams, no fiberglass anywhere, and 100% assembled in the USA, backed by a 10-year limited warranty.
Soft you can try before you keep
On the floor at five Kentucky showrooms next to the Medium, so you can settle the plush-versus-medium call in person, then get free local delivery and old-mattress haul-away.
Soft on top, structured underneath: the plush that doesn't quit on your back
The Aspire Plush runs the same iComfort recipe as the rest of the line, weighted toward cushion. From the top down: a cool-to-the-touch CoolFeel cover, then about an inch of graphite-infused Perfect Conform memory foam, then EverCool Supreme, then Deep Reaction Max for support before the foam gets too soft to hold you.
The part that makes a 3-out-of-10 bed work instead of sag is the 5-ZoneResponse layer over the 7-inch Serta foam core: five firmness zones tuned for full-body spinal alignment, firmer beneath your hips and lumbar, softer beneath your shoulders. Cheap plush beds skip this and feel wonderful for a week, then feel like a hammock. This one cushions and supports at the same time. The whole stack measures 14 inches, carries CertiPUR-US certified foams, and contains no fiberglass.
If the plush surface turns out to be more than you want, the Aspire Medium 14" is the identical build with a firmer top. Same support, less sink, lie on both and your shoulder will tell you which.
See the full Serta lineup →The side sleeper's bed, first and foremost
Side sleepers, this is the one. At a 3 out of 10 the surface gives way at the shoulder and hip the way side sleeping needs, while the zoned support underneath keeps your spine from bowing. If a firmer bed has been leaving your shoulder sore, start here.
Lighter-weight sleepers: if firmer beds feel like the floor to you, a plush all-foam surface finally lets you settle in and feel cradled rather than perched.
Couples where one of you craves soft: the dense core keeps motion from crossing over, so the plush partner gets their cloud without waking the other. If the other partner needs firm, the medium twin is the compromise to test.
Adjustable-base sleepers: the all-foam build flexes cleanly with the base, so reading or zero-gravity positions feel natural rather than fought.
Hot sleepers, with a caveat: the graphite foams and CoolFeel cover make this one of the cooler plush all-foam options, but deep memory foam still breathes less than coils. If overheating is your single biggest complaint, ask about a hybrid.
Probably not for you if you sleep on your back or stomach, you are a heavier sleeper who needs more underneath, or you want a cool, springy feel. Back and stomach sleepers should look at the Aspire Medium 14"; if you want bounce and airflow, ask about a hybrid.
Specifications
| Height | 14" |
|---|---|
| Feel | Plush |
| Firmness | 3 out of 10 (10 = firmest) |
| Construction | CoolFeel cover over graphite-cooled memory foams, a 5-ZoneResponse support layer, and a 7-inch Serta foam core: 14 inches total. |
| Cooling | Graphite-infused Perfect Conform memory foam and a cool-to-the-touch CoolFeel cover move heat away from the surface, with EverCool Supreme foam adding airflow underneath. |
| Motion isolation | Excellent: the all-foam build absorbs movement before it reaches the other side of the bed, so you don't feel a partner shift. |
| Adjustable base | Yes, compatible with adjustable bases |
| Certifications | CertiPUR-US certified foams |
| Warranty | 10-year limited warranty |
| Trial period | 120 days at Mattress Overstock |
Frequently asked questions
How soft is the Serta iComfort Aspire Plush 14"?
It is a genuine plush, about a 3 out of 10, where 10 is firmest. That is the soft end of the iComfort line: you settle into the surface rather than resting on top of it, while the 5-ZoneResponse layer underneath keeps that softness from turning into a sag at your hips. Like all memory foam, it firms up a little in a cool room and softens in a warm one.
Who is the Plush best for?
Side sleepers, above all: the deep cushion gives your shoulder and hip somewhere to go. It also suits lighter-weight sleepers who find most beds too firm. Back and stomach sleepers usually want more support than a 3/10 provides; the Aspire Medium 14" is the better fit there.
How is it different from the Aspire Medium 14"?
Identical build, different surface feel. The Plush is tuned soft (about 3/10) for a deep side-sleep cradle; the Aspire Medium is the firmer, more universal 5/10. The cooling, the zoned support, and the Serta foam core are the same. Lie on both side by side and your body picks one in a minute or two.
What is it made of?
From the top down: a cool-to-the-touch CoolFeel cover, about an inch of graphite-infused Perfect Conform memory foam, EverCool Supreme, and Deep Reaction Max, all riding on a 5-ZoneResponse support layer over a 7-inch Serta foam core. The full profile is 14 inches.
Will a plush memory-foam bed sleep hot?
Plush foam is where heat tends to hide, which is exactly why this one layers graphite-infused Perfect Conform and EverCool Supreme foams under a cool-to-the-touch CoolFeel cover. It runs cooler than most plush all-foam beds, but if overheating is your single biggest issue, a coil hybrid will still breathe more, and the team will point you to one.
Does it contain fiberglass?
No. The Aspire Plush uses no fiberglass, and its foams are CertiPUR-US certified, tested to be free of the harmful chemicals shoppers worry about. It is 100% assembled in the USA.
Does it work with an adjustable base?
Yes. The all-foam build flexes cleanly, so it works on a platform, slats, a box spring, or an adjustable base. Raising your head or legs will not void the warranty. If you are pairing it with a base, the floor team can show you both together.
What is the return policy if I do not love it?
You get a 120-day comfort guarantee. If the feel is not right, you exchange it for store credit toward any bed of equal or greater value (you pay the difference if you trade up). There is no cash refund, but there are no restocking-fee games either. Give a new foam bed about three weeks to settle before you decide.
How do delivery and the comfort guarantee work?
The Mattress Overstock team delivers across Kentucky, usually next business day when your size is in stock, and hauls the old mattress away at no charge. You also get the 120-day comfort guarantee above. Give a new foam bed about three weeks to settle before deciding.
Can I see this mattress in person near me?
Yes, and with a plush bed it matters even more, because "soft" feels different to every body. Mattress Overstock is a Kentucky-owned company that has served the state since 2012, with five showrooms you can visit: Lexington (on Nicholasville Road), Georgetown, Somerset, London, and Richmond. The Aspire Plush is on the floor right next to the Medium, so you can switch between the two in your own sleeping position. Delivery is free across the Kentucky service area with old-mattress haul-away, and because everyone on the floor is paid the same no matter which brand you choose, the guidance you get is honest, part of why shoppers rate the showrooms about 4.7 stars across more than 500 Google reviews.
Buy it from people you can actually visit
- Free local delivery To your home across Central & Eastern Kentucky.
- Free setup We place and set up your new bed in the room.
- Free old-mattress haul-away The old one goes out the same day the new one comes in.
Independently owned in Kentucky since 2012. Walk in any day (no appointment) and someone who actually knows the floor will help you find the right fit.
Still deciding?
Try it in person at any Kentucky showroom
Walk into any Mattress Overstock location, lie down, and feel the difference yourself. No appointment, no pressure. Our team has over 100 years of combined mattress experience and we're here to help you find the right fit.
