Sierra Sleep by Ashley
Sierra Sleep 12 Inch Chime Elite 2.0 Mattress
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The Sierra Sleep 12 Inch Chime Elite 2.0 is built for one kind of sleeper: someone who wants a soft, body hugging surface and does not want to give up cooling to get it. If a firm, resistant mattress is what you are after, this is not your bed, look further down the Chime Elite lineup for something with more resistance underneath you.
The build
This is Ashley's Sierra Sleep 12 Inch Chime Elite 2.0, model M426, and it is a straightforward foam in a box construction. At the surface, a micro cool cover works to pull heat away from the body as soon as you lie down. Underneath, a layer of green tea infused foam sits over a response memory foam comfort layer, the two working together to soften the surface at the shoulders and hips. A supportive transition foam layer sits beneath both, there to keep the mattress from feeling like it bottoms out under normal weight even though the top is soft. Twelve inches total keeps the profile tall enough to feel substantial without needing deep pocket sheets.
Because it ships compressed and rolled in a box, plan on roughly 48 hours after unboxing for the mattress to fully expand and settle into its true feel, though it is usually sleepable well before that. The all foam build also pairs cleanly with an adjustable base, so raising the head or the feet does not fight the mattress the way a coil bed sometimes can.
Feel and support
Comfort level here is plush. The green tea foam and response memory foam let the body sink in at the shoulders and hips rather than resting on top of the surface, and the micro cool cover is doing real work against the number one complaint people have with memory foam, sleeping hot. The transition layer underneath keeps that softness from turning into a sag, so the give feels intentional rather than like the bed is wearing out.
Who it suits
- Back sleepers who want cushioning at the lower back and hips without losing support underneath
- Side sleepers looking for real pressure relief at the shoulder and hip
- Hot sleepers who like memory foam's contouring but not the heat that can come with it
- Anyone furnishing a guest room, kid's room, or smaller space where Twin or California King fits the footprint
Who should skip it
Stomach sleepers and anyone who wants a firm, on top of the bed feel should look elsewhere in the Chime Elite lineup. A plush build like this one is meant to cradle, and it does that job well, but it is not the pick if you tend to sink too far and wake up with your lower back complaining.
This model is currently available in Twin and California King. Plush is one of those feels that reads differently on paper than it does under your own back and hips, so come lie down on the 12 Inch Chime Elite 2.0 at one of our Kentucky showrooms before you decide. It is on the floor next to the rest of the Sierra Sleep lineup, so you can compare the feel for yourself in a few minutes.
What makes this mattress different
Micro cool cover working against memory foam heat
The cover is engineered to pull heat away from the body the moment you lie down, addressing the top complaint people have with plush memory foam.
Green tea infused foam at the surface
A green tea infused foam layer sits right under the cover, softening contact at the shoulders and hips as part of the plush feel.
Response memory foam comfort layer
Beneath the green tea foam, a response memory foam layer continues the contouring, letting the body settle in rather than rest on top.
Supportive transition foam layer
A transition foam layer sits under the comfort foams, keeping the mattress from bottoming out under normal weight even with a soft top.
Genuinely plush, not firm dressed up as soft
This is one of the softer feels in the Sierra Sleep lineup, built to cradle the shoulders and hips rather than hold you on the surface.
Adjustable base compatible
The all foam build flexes cleanly with an adjustable base, so raising the head or feet does not fight the mattress.
Ships compressed in a box
A convenient option for stairwells, hallways, and doorways where a traditional mattress is hard to maneuver. Allow about 48 hours to fully expand after unboxing.
Backed by a 10 year non prorated warranty
Ashley backs the 12 Inch Chime Elite 2.0 with a full 10 year non prorated warranty against manufacturing defects.
A soft top, a firmer hand underneath
The 12 Inch Chime Elite 2.0 layers its comfort at the top and saves its structure for underneath. Starting at the surface, a micro cool cover is built to draw heat away from the body right away, so the plush feel does not turn into a warm one overnight. Just beneath that cover sits a layer of green tea infused foam, followed by a response memory foam comfort layer, the two working together to soften pressure at the shoulders and hips.
Underneath both comfort layers is a supportive transition foam layer. Its job is simple: keep a soft mattress from feeling like it gives out under normal body weight. Without it, a plush build like this one could sink too far and settle into a permanent dip. With it, the give stays consistent night after night. Twelve inches total keeps the profile substantial while still working with standard depth sheets, and the all foam construction means the mattress flexes cleanly with an adjustable base rather than fighting it.
This is a mattress built around one clear idea: a genuinely plush, contouring surface that does not sleep hot and does not sag out from under you.
See the full Sierra Sleep lineup →Built to cradle, not to resist
Back sleepers: the green tea and response memory foam layers cushion the lower back and hips while the transition foam keeps you from sinking too far.
Side sleepers: this is the position that benefits most from a plush surface. The comfort foams give at the shoulder and hip instead of pressing back against them.
Hot sleepers: the micro cool cover is doing real work here, pulling heat away from the body so you get memory foam's contouring without the trapped warmth older foam beds are known for.
Couples and light sleepers: with no coils in the build, movement has nowhere to travel across the mattress, so a partner turning over or getting up early is unlikely to disturb your side of the bed.
Guest rooms and smaller spaces: available in Twin and California King, sizes that fit guest rooms, kids' rooms, and rooms where a full size lineup is not the point.
Probably not for you if: you sleep on your stomach or specifically want a firm, on top of the bed feel, since the plush comfort layers are built to sink in rather than hold you level. A firmer model in the Chime Elite lineup would suit that preference better.
Specifications
| Height | 12 in |
|---|---|
| Feel | Plush |
| Firmness | Plush, one of the softer feels in the Sierra Sleep lineup |
| Construction | Micro cool cover over a green tea infused foam layer, a response memory foam comfort layer, and a supportive transition foam layer: 12 inches total. |
| Cooling | A micro cool cover paired with the green tea infused foam layer is designed to pull heat away from the body, helping offset the warmth plush memory foam can otherwise trap. |
| Motion isolation | Good: the all-foam build has no coils to transmit movement, so a partner shifting position or getting up early is unlikely to disturb your side of the bed. |
| Warranty | 10-year non-prorated warranty |
Frequently asked questions
How firm is the Sierra Sleep 12 Inch Chime Elite 2.0?
Plush. It is built to be one of the softer feels in the Sierra Sleep lineup, with a green tea infused foam layer and a response memory foam comfort layer both working to cradle the shoulders and hips. A transition foam layer underneath keeps that softness from turning into a sag.
Who should buy a plush mattress like this?
Back and side sleepers get the most benefit, since the soft comfort layers cushion the hips and shoulders where pressure builds up most. Stomach sleepers and anyone who wants a firm, resistant surface tend to prefer a firmer model in the Chime Elite lineup instead.
Does this mattress sleep hot like some memory foam beds?
It is built to avoid that. The micro cool cover is designed to pull heat away from the body at the surface, working alongside the green tea infused foam layer to offset the warmth that plush memory foam can otherwise trap.
Is the 12 Inch Chime Elite 2.0 memory foam or a hybrid?
All foam, no coils. A green tea infused foam layer and a response memory foam comfort layer sit over a supportive transition foam layer, 12 inches total. The plush feel comes from those comfort layers, not from springs.
How well does it isolate motion for couples?
Well. With no coil system to carry movement across the mattress, a partner rolling over or getting up early is far less likely to disturb your side of the bed.
Can I use this mattress on an adjustable base?
Yes. The 12 Inch Chime Elite 2.0 is adjustable base compatible and also sits well on a standard foundation or platform bed frame.
How long does it take to expand after unboxing?
The mattress ships compressed and rolled in a box. Plan on roughly 48 hours for it to fully expand and settle into its true feel, though it is generally usable well before then.
What sizes is this mattress available in?
Twin and California King. If you need a size in between, ask our showroom team about other plush options in the Sierra Sleep and Ashley lineup.
Does this mattress come with an at-home trial?
No. Sierra Sleep mattresses, including the 12 Inch Chime Elite 2.0, do not come with an at-home trial period. Plush feels different to every body, so our Kentucky showrooms are where you lie on this exact mattress and decide before you buy, not after.
Can I see this mattress in person near me?
Yes, and with a plush mattress like this, that is the smart way to decide. Mattress Overstock is a Kentucky owned company with showrooms across the state where you can lie on the 12 Inch Chime Elite 2.0 in your own sleeping position before you take one home.
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.
