Sierra Sleep by Ashley
Sierra Sleep 10 Inch Pocketed Hybrid Mattress
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The verdict: the Sierra Sleep 10 Inch Pocketed Hybrid is a straightforward medium hybrid for anyone who wants real coils under real foam without paying for a specialty comfort layer they don't need. Think guest room, kid's room, first apartment, or a second bed for a shared house. It is not built to be the deep plush cradle a strict side sleeper hunts for; it is built to be a dependable, supportive bed that does the job every night.
How it's built
The top layer is a quilted cover over cooling gel memory foam, so the sleeping surface stays cool to the touch rather than trapping body heat the way older solid foam can. Under that sits a 2 inch transition layer paired with a gel memory foam lumbar zone, positioned to ease pressure through the hips and lower back before you reach the support core. That core is built from individually wrapped pocketed coils, which flex on their own instead of pulling the whole mattress down around you. The perimeter gets reinforced with two rows of 9 inch, 13 gauge coils, so the edge of the bed holds its shape when you sit down to put your shoes on instead of collapsing underneath you. Flame retardant comfort fiber runs through the build, standard across Ashley's mattress lineup. Series: 10 Inch Pocketed Hybrid (Ashley model M589).
Feel and support
This settles into a medium feel: enough foam on top to take the edge off, enough coil underneath to keep you supported rather than sinking past it. Because the coils move independently of each other, motion transfer stays low, which matters if you share the bed with someone who tosses at night or gets up earlier than you do. Back sleepers and combination sleepers get support under the hips and shoulders without feeling like they're lying on a board. Side sleepers get some give at the shoulder and hip, though not the deep hug of an all-foam plush bed.
Who it suits
- Back and combination sleepers who want support with a bit of cushion on top
- Couples who need the coils' motion isolation more than a soft all-foam feel
- Guest rooms, kids' rooms, and first apartments where a dependable medium bed beats a specialty upgrade
- Adjustable base owners, since the hybrid build flexes cleanly at the head and foot
It's probably not for you if you're a committed side sleeper chasing a deep plush sink, or if you specifically want an all-foam bed with zero coil bounce. This is a medium hybrid, not a soft one.
Delivery and setup
It ships compressed and rolled in a box, which makes it far easier to carry up a stairwell or through a narrow doorway than a traditional flat mattress. Once it's unboxed, give it about 48 hours to fully expand before you judge the feel; it will keep softening slightly as it settles in. It carries a 10-year warranty from Sierra Sleep by Ashley.
Available Sizes
- Twin
- Full
Feel is personal, and no photo or description replaces lying down on the actual mattress. Come try this exact bed in person at one of our Kentucky showrooms before you decide.
What makes this mattress different
Cooling gel memory foam top
A quilted cover sits over cooling gel memory foam, so the surface stays cool to the touch instead of trapping heat the way older solid foam beds can.
Gel memory foam lumbar zone
A 2 inch transition layer works with a gel memory foam lumbar zone to ease pressure through the hips and lower back before you reach the coils.
Individually wrapped pocketed coils
The support core is built from coils wrapped one by one, so they flex independently and contour to your body instead of pulling the whole surface down with them.
Reinforced 9 inch, 13 gauge perimeter coils
Two rows of heavier gauge coils run the edge of the mattress, so the sleeping surface holds up when you sit down at the side of the bed instead of collapsing.
Flame retardant comfort fiber
A layer of comfort fiber runs through the build for fire protection, standard across Ashley's mattress lineup.
Adjustable base compatible
The hybrid construction flexes cleanly at the head and foot, so it works now on a standard foundation and later on an adjustable base if you upgrade.
Ships compressed in a box
The mattress compresses and rolls for shipping, making it far easier to carry upstairs or through a narrow doorway. Allow about 48 hours after unboxing for it to fully expand.
A medium hybrid that keeps foam and coils each doing their job
The 10 Inch Pocketed Hybrid layers a quilted, cooling gel memory foam top over a 2 inch transition layer and a gel memory foam lumbar zone, the part of the build tasked with easing pressure through the hips and lower back. Underneath, the support core is made of individually wrapped pocketed coils that move independently rather than as one connected unit, which is what keeps motion transfer low when a partner shifts or gets up.
The perimeter is reinforced with two rows of 9 inch, 13 gauge coils, heavier gauge than the coils in the center of the bed, so the edge holds its shape instead of collapsing when you sit down to get dressed. Flame retardant comfort fiber runs through the build, and the whole mattress ships compressed and rolled in a box for easier delivery. Give it about 48 hours after unboxing to fully expand before you judge the feel.
See the full Sierra Sleep lineup →Built for back and combination sleepers first
Back sleepers: the medium support keeps the hips from sinking too far while the gel memory foam lumbar zone eases pressure through the lower back, a combination most back sleepers rest well on.
Combination sleepers: individually wrapped coils respond quickly as you shift position through the night, so the bed doesn't feel like it's playing catch up when you roll from your back to your side.
Side sleepers: you'll get some give at the shoulder and hip from the top foam layer, but this isn't a deep plush cradle. If you sleep hard on your side and want more contour, compare a softer feel before deciding.
Couples and shared beds: because the coils flex independently, movement on one side of the mattress is far less likely to carry across to the other, useful if one of you gets up earlier or moves around at night.
Guest rooms and first apartments: this is a dependable, no-frills medium hybrid for a room that needs a solid bed without a specialty comfort layer attached to the price.
Probably not for you if: you want a true plush, deep-sink feel, or you sleep exclusively on your side and need heavy shoulder and hip contour. Ask the floor team about a softer model in that case.
Specifications
| Height | 10 in |
|---|---|
| Feel | Medium |
| Firmness | 5 out of 10 (10 = firmest) |
| Construction | Cooling gel memory foam quilt top over a foam transition layer with a gel memory foam lumbar zone, an individually wrapped pocketed coil support core, and a reinforced 9 inch, 13 gauge perimeter coil edge: 10 inches total. |
| Cooling | A gel-infused memory foam quilt top pulls heat away from the surface, so the medium feel doesn't sleep hot the way older solid foam can. |
| Motion isolation | Good: individually wrapped pocketed coils flex on their own, so movement on one side of the bed is far less likely to carry across to the other. |
| Warranty | 10-year warranty from Sierra Sleep by Ashley. |
Frequently asked questions
What does "10 Inch Pocketed Hybrid" actually mean?
It's a hybrid mattress: a foam comfort system on top of an individually wrapped pocketed coil support core, built to a 10 inch total profile. The foam softens the surface and the coils provide the support and edge structure, so you get contour without losing the responsiveness coils give you.
How firm is this mattress?
It's a medium feel: supportive enough that you rest on top of it rather than sinking in, with enough gel memory foam on top to soften the surface. It sits between a firm, sleep-on-top-of-it bed and a soft, deep-sink one.
Is this a good mattress for side sleepers?
It can work for combination sleepers who spend some time on their side, since the top foam layer gives a bit of contour at the shoulder and hip. If you sleep exclusively on your side and want a deep cradle, this medium hybrid isn't built that soft; ask the floor team to compare a plusher option.
Will I feel my partner moving around at night?
Less than you would on a traditional innerspring. The coils are wrapped individually, so they flex on their own instead of rocking the whole surface when someone shifts position or gets out of bed.
What sizes are available?
This listing is available in Twin and Full.
Can I use this mattress on an adjustable base?
Yes. The hybrid construction is built to flex at the head and foot, so it works on a standard foundation now and on an adjustable base if you add one later.
How does delivery and setup work?
The mattress ships compressed and rolled in a box, which makes it much easier to move through stairwells and narrow doorways than a traditional mattress. Once you unbox it, give it about 48 hours to fully expand before judging the feel.
What's the warranty?
It carries a 10-year warranty from Sierra Sleep by Ashley.
Can I try this mattress at home before I buy it?
No. Sierra Sleep beds don't come with an at-home trial period, so there isn't a window to test it in your own bedroom before committing. The honest way to decide is to come lie down on this exact mattress at one of our Kentucky showrooms, in the position you actually sleep in, before you buy.
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.
