Sierra Sleep by Ashley
Sierra Sleep Limited Edition PT Mattress
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The Sierra Sleep Limited Edition PT is a straightforward pillow top: a soft, cushioned surface stacked over a real wrapped coil system, built for sleepers who want that classic plush on top, supportive underneath feel without paying premium prices for it. If your current mattress sags in the middle or goes flat under your hips and shoulders, this is the kind of upgrade that addresses both problems at once.
How It Is Built
Ashley starts the Limited Edition PT (model M412) with a pillow top made from layers of high density gel memory foam paired with support foam. The gel foam takes the pressure off your shoulders and hips as you settle in, while the support foam beneath it keeps the surface from feeling like it is bottoming out under your weight. A 4 way stretch knit cover wraps the whole mattress, so the surface flexes with you and stays smooth against the skin instead of bunching at the seams.
Underneath the comfort layers sits a power packed wrapped coil system: 15 gauge coils through the center of the mattress for durable, everyday support, and 13 gauge coils around the perimeter for a firmer edge. That perimeter reinforcement matters more than people expect. It keeps the mattress from collapsing when you sit on the side to put on shoes, and it lets you sleep closer to the edge without feeling like you are about to roll off. All of it stacks to 13 inches total, tall enough for a genuine pillow top without the base feeling thin or flimsy underneath it.
Because it ships compressed in a box, plan on giving it about 48 hours after unboxing to fully expand and settle into its true feel. That is normal for a boxed mattress of this thickness, and it is worth the short wait.
Feel and Support
Lie down on the Limited Edition PT and the first thing you notice is the give at the surface: the gel memory foam cushions your shoulders and hips right away, the hallmark of a pillow top. Push past that initial softness and the wrapped coils take over, holding your midsection level so you are not sinking into a valley by morning. It is a two part feel on purpose, soft where your body needs cushioning, firmer where it needs support.
Who Sleeps Well Here (and Who Should Look Elsewhere)
Side sleepers and combination sleepers tend to like this bed the most, since the pillow top gives their shoulders and hips somewhere to sink in while the coils keep their spine from dropping out of line. Back sleepers who prefer a softer feel but still want some push back under the lumbar area generally do well here too. If you already know you run hot at night, ask our team about a coil system with a cooling cover instead, since a foam pillow top like this one will sit a touch warmer than an all coil design. And if you want a firm, barely there surface, this is not the right bed. It is built to cushion, not to feel like a board.
- Twin
- Full
- Queen
- King
- California King
Every size in the Limited Edition PT collection uses the same pillow top, the same coil gauge, and the same cover, so choosing a bigger or smaller size does not mean stepping down in comfort.
The best way to know if a pillow top like this suits you is to lie on it. Stop by any of our Kentucky showrooms, stretch out in your normal sleeping position for a few minutes, and feel the coils pick up right where the foam leaves off.
What makes this mattress different
Pillow top over real coils
A soft, cushioned pillow top rides on top of a genuine wrapped coil system, so you get plush give at the surface without losing spring underneath.
High density gel memory foam
Gel memory foam in the comfort layers cushions the shoulders and hips as you settle in, working alongside a support foam layer that keeps the surface from feeling hollow.
15 gauge center coils
Power packed wrapped coils run 15 gauge through the center of the mattress, steady support under the heaviest part of your body, night after night.
13 gauge perimeter coils
A firmer 13 gauge coil wraps the edge of the mattress, so the sides hold up when you sit down to get dressed and you can sleep closer to the edge without feeling like you will roll off.
4 way stretch knit cover
The cover stretches in every direction, so it moves with the pillow top instead of pulling tight or bunching at the seams over time.
13 inches of total profile
Comfort layers and coil system stack to 13 inches, enough depth for a real pillow top feel without the base underneath it ever feeling thin.
Ships compressed, expands at home
Like most boxed mattresses this size, it arrives compressed and needs about 48 hours after unboxing to fully expand into its true feel.
One build, five sizes
Twin through California King all use the same pillow top, the same coil gauge, and the same cover, so the size you pick does not change the comfort you get.
A plush pillow top backed by a real coil system
Start at the top and the Limited Edition PT (Ashley model M412) leads with a 4 way stretch knit cover, then a comfort layer built from high density gel memory foam and support foam. The gel foam gives the pillow top its immediate cushioning, contouring around the shoulders and hips, while the support foam underneath keeps that softness from collapsing into a dead spot.
Below the foam sits the part that separates a pillow top from a simple foam topper: a power packed wrapped coil system. The center of the mattress runs 15 gauge coils for everyday support under your torso and hips, and the perimeter steps up to a firmer 13 gauge wire that reinforces the edge so the mattress does not sag when you sit on the side of the bed. Between the coils and the foam, the build reaches 13 inches total, enough room to layer real cushioning over real support instead of choosing one or the other.
See the full Sierra Sleep lineup →Built for sleepers who want cushioning without losing support
Side sleepers: the pillow top's gel memory foam gives your shoulders and hips somewhere to sink in, exactly what side sleeping needs to keep your spine level through the night.
Combination sleepers: because the coils hold the surface up even where the foam is soft, you can move between side, back, and stomach positions without feeling stuck in one spot.
Back sleepers who like a softer bed: you get cushioning at the surface plus coil support under the lumbar area, a good match if firmer beds have felt too hard on your lower back.
Couples of different sizes: the 13 gauge perimeter coils keep the edge from collapsing, so a heavier partner sitting down on the side to get up does not tip the lighter partner toward the middle.
Hot sleepers: this is a foam pillow top over an innerspring, not a cooling specific build. If temperature is your top complaint, ask our team about a coil system paired with a dedicated cooling cover instead.
Probably not for you if: you want a firm, minimal give surface. The pillow top is built to cushion first, so a firmer Sierra Sleep or hybrid model on our floor will suit you better.
Specifications
| Height | 13 in |
|---|---|
| Feel | Soft |
| Firmness | Soft, about 4 out of 10 (10 = firmest) |
| Construction | 4 way stretch knit cover over a gel memory foam and support foam pillow top, with 15 gauge center coils and 13 gauge perimeter coils in a wrapped coil system: 13 inches total. |
| Warranty | 10-year limited warranty |
Frequently asked questions
How firm is the Sierra Sleep Limited Edition PT?
It is built as a plush pillow top: soft at the surface where the gel memory foam sits, then firmer as you press down into the wrapped coil system underneath. If you generally prefer a softer bed over a firm one, this construction is designed with you in mind.
Is this mattress memory foam or a hybrid?
It is a hybrid pillow top, not an all foam bed: high density gel memory foam and support foam on top of a power packed wrapped coil innerspring. The foam handles cushioning at the surface and the coils handle support underneath.
What do the coil gauges mean?
Gauge measures coil wire thickness, and a lower number means a firmer, thicker wire. The Limited Edition PT runs 15 gauge coils through the center of the mattress for everyday support and steps up to a firmer 13 gauge around the perimeter, which reinforces the edge of the bed.
Why does the edge of the mattress matter?
The 13 gauge perimeter coils keep the sides of the mattress from caving in when you sit down to get dressed, and they let you sleep closer to the edge of the bed without feeling like it is giving way underneath you.
How thick is this mattress?
13 inches total, measured from the top of the pillow top to the base of the coil system. That is enough depth for a genuine pillow top feel without the coils underneath it ever feeling thin.
Does it need time to expand after delivery?
Yes. Like most mattresses that ship compressed in a box, plan on about 48 hours after unboxing for it to fully expand and settle into its true feel before you judge how it sleeps.
Does Sierra Sleep offer an at home trial on this mattress?
No. Sierra Sleep beds, including the Limited Edition PT, do not include an at home trial period. The way to know if the feel is right for you is to lie on it in person, which is exactly what our Kentucky showrooms are set up for.
What sizes does the Limited Edition PT come in?
Twin, Full, Queen, King, and California King, all built to the same pillow top specification with the same coil gauge and cover, so you can size up or down without giving up comfort.
Can I see this mattress in person?
Yes, and with a pillow top like this one, lying on it is the best way to judge the feel for yourself. Visit any of our Kentucky showrooms and stretch out in your normal sleeping position for a few minutes before you decide.
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.
