Sierra Sleep by Ashley
Sierra Sleep Chime 10 Inch Hybrid Mattress
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The verdict: if you sleep in more than one position and never landed on a firm or a plush bed you liked, the Sierra Sleep Chime 10 Inch Hybrid is built for exactly that in-between spot, without the price tag of the mattresses that usually own it.
The build
Sierra Sleep is Ashley's mattress line, and the Chime 10 Inch Hybrid (model M696) is one of its most straightforward beds: a cooling gel infused memory foam comfort layer over a system of individually wrapped coils, finished with a high density quilted foam top. The gel foam is there to pull heat off your skin as you settle in, the wrapped coils flex independently so each one responds to your body instead of the whole surface moving together, and the reinforced perimeter coils hold the edge so the usable sleep surface runs closer to the true edge of the mattress instead of collapsing under you. At 10 inches, it's a lean profile that keeps sheets fitting the way they're supposed to and works on a platform bed, a solid foundation, or an adjustable base if you have one.
Feel and support
This is a medium hybrid, meaning it gives at the shoulders and hips enough to relieve pressure without letting your spine sag out of line. The wrapped coil core is doing the structural work here, so you get more push-back and a touch more bounce than an all-foam bed, while the gel foam layer takes the edge off so it doesn't feel like sleeping on springs. It arrives compressed in a box, which sounds like a shortcut but isn't: once it's unwrapped and given time to expand, it's the same coil-and-foam mattress you'd get delivered flat, just easier to carry into a bedroom.
Who it suits
- Combination sleepers who move between their back, side, and stomach through the night and don't want to commit to one extreme.
- Anyone replacing an old, sagging bed who wants real edge support back, so sitting down to put on shoes doesn't feel unstable.
- Couples who each want a bit more responsiveness than foam gives, since coils return energy faster when one of you gets up.
- Shoppers who want a hybrid without paying hybrid prices at the higher end of the Sierra Sleep and Ashley lineup.
It's probably not the right call if you're a strict side sleeper chasing a deep, slow-sinking hug, or if you specifically want a firm, foam-only feel with zero bounce. Those sleepers tend to do better on a plush all-foam model or a firmer hybrid built with a different coil gauge.
A foundation or box spring is sold separately; pair it with one rated for hybrid mattresses so the coil system gets the support it's designed around.
Available in Twin, Full, Queen, King, and California King. The only way to know if a medium hybrid is your medium is to lie on one, so come stretch out on the Chime 10 Inch Hybrid at any of our Kentucky showrooms before you decide.
What makes this mattress different
Medium hybrid, made for switching positions
A cooling gel memory foam comfort layer over wrapped coils gives enough give for side sleepers and enough push-back for back and stomach sleepers, so combination sleepers aren't stuck picking a side.
Gel infused memory foam up top
The comfort layer is designed to pull heat away from the body as you settle in, so the immediate feel is cushioned without holding warmth against your skin.
Individually wrapped coil core
Each coil is encased and moves on its own, so the mattress contours to your shape and a partner's movement is less likely to travel across the bed.
Reinforced perimeter coils
Firmer coils run the edge of the mattress, so the usable sleep surface extends closer to the true edge instead of collapsing when you sit down or sleep near the side.
High density quilted top
A quilted foam layer sits at the very top for an immediate, comfortable hand-feel the moment you lie down.
10 inch profile
A lean overall height that fits standard sheets and sits well on a platform bed, solid foundation, or adjustable base.
Adjustable base compatible
The hybrid construction flexes with a reclining or head-up base, so it isn't limited to a flat platform.
Arrives compressed in a box
Rolled and compressed for easier delivery into tight stairwells or hallways, then it expands to full size once unwrapped.
A gel foam comfort layer over a wrapped coil core, built for a medium feel
The Chime 10 Inch Hybrid runs a straightforward hybrid recipe. From the top down: a high density quilted foam layer for immediate surface comfort, then a layer of gel infused memory foam that cushions pressure points at the shoulders and hips while pulling heat away from the body, then an individually wrapped coil support system that forms the core of the mattress.
Because each coil is wrapped and moves independently, the surface contours to your shape at the point of contact instead of the whole bed flexing together, which is also what keeps motion from one side of the bed traveling to the other. Reinforced coils run the perimeter, so the edge holds its shape when you sit down to get dressed or sleep close to the side. All of it sits inside a 10 inch profile, lean enough to work on a platform bed, a solid foundation, or an adjustable base.
The result is a medium feel: enough foam on top to relieve pressure, enough coil underneath to keep the spine supported and add a bit of responsiveness that an all-foam bed doesn't have.
See the full Sierra Sleep lineup →Built for the sleeper who won't commit to one position
Combination sleepers: the medium gel foam over coils gives enough at the shoulder for side sleeping and enough push-back for back and stomach positions, so you're not compromising no matter which way you land.
Back sleepers: the wrapped coil core keeps the lumbar area supported while the comfort layer keeps it from feeling hard.
Couples: individually wrapped coils respond where you're lying rather than moving as one surface, so a partner getting up or shifting position is less likely to wake you.
Sleepers replacing a sagging bed: the reinforced perimeter coils bring back real edge support, so the whole surface is usable again instead of just the middle.
Hot sleepers who still want some bounce: the gel infused foam layer is built to pull heat off the surface, while the coil core keeps the responsiveness an all-foam bed doesn't have.
Probably not for you if: you're a dedicated side sleeper who wants a deep, slow-sinking hug, or you want a completely still, spring-free feel. A plush all-foam model or a different coil gauge will suit you better; ask the floor team to point you to one.
Specifications
| Height | 10 in |
|---|---|
| Feel | Medium |
| Firmness | 5 to 6 out of 10 (10 = firmest) |
| Construction | High density quilted foam top over a gel infused memory foam comfort layer and an individually wrapped coil support system with reinforced perimeter coils: 10 inches total. |
| Cooling | Gel infused memory foam in the comfort layer is designed to pull heat away from the body as you settle in, rather than trap it against the surface. |
| Motion isolation | Good. Individually wrapped coils move independently, so movement on one side of the bed is less likely to carry across to a partner. |
Frequently asked questions
How firm is the Sierra Sleep Chime 10 Inch Hybrid?
It's built as a medium hybrid: soft enough at the surface to relieve pressure at the shoulders and hips, supportive enough underneath from the wrapped coil core to keep the spine level. It sits in the middle of the firmness range rather than leaning plush or firm.
Is this a memory foam mattress or a hybrid?
It's a true hybrid: a gel infused memory foam comfort layer over a system of individually wrapped coils, not an all-foam build. That combination is what gives it more responsiveness and bounce than a foam-only mattress while still relieving pressure at contact points.
Does it sleep hot?
The comfort layer is gel infused memory foam, built specifically to pull heat away from the body rather than trap it, and the wrapped coil core allows more airflow through the mattress than a solid foam block would.
Is it good for couples?
Yes. Individually wrapped coils move independently, so movement on one side of the bed is less likely to carry across to the other, which is the main complaint couples have with older innerspring mattresses.
Can I use this on an adjustable base?
Yes, the hybrid build is compatible with adjustable bases. It also works on a standard platform bed or a solid foundation rated for hybrid mattresses; a foundation or box spring is sold separately.
It arrives in a box. Is it the same mattress as one delivered flat?
Yes. It's compressed and rolled for easier delivery, then expands to its full size once unwrapped. The layers, coils, and feel are the same mattress either way.
Who is this mattress not a good fit for?
Strict side sleepers who want a deep, slow-sinking foam hug, and anyone who wants a completely still, spring-free feel, tend to be happier on a plush all-foam model or a hybrid with a different coil gauge. Come feel a few side by side on the floor and the difference is obvious in a couple of minutes.
Does Sierra Sleep offer an at-home trial on this mattress?
No. Sierra Sleep beds, including the Chime 10 Inch Hybrid, don't come with an at-home trial period. The honest way to know if the feel is right for you is to try it in person at one of our Kentucky showrooms before you buy, not to guess and hope it works out at home.
Can I see this mattress in person near me?
Yes, and with a mattress that's the better way to decide. Mattress Overstock is a Kentucky owned company that has served the state since 2012, with showrooms in Lexington, Georgetown, Somerset, London, and Richmond. Lie down on this exact mattress in your own sleeping position before you decide, and because everyone on the floor is paid the same no matter which brand you choose, the guidance you get is honest.
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.
