IN STOCK
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam
Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm Sierra Sleep® by Ashley Memory Foam

Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm

Sierra Sleep Essentials 2.0 12 Memory Foam Mattress — The Deep Firm

SKU:M20611

Regular price $459.99
Sale price $459.99 Regular price $662.16
You Save $202.17
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$0 down, 0% interest on the Kensington Synchrony HOME card; mattress purchases of $999+ qualify for up to 60 months
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Price match guarantee. We match an authorized dealer's advertised price on the identical model and configuration; details on the price-match page. Details

Pickup or fast delivery. In-stock pieces are available for pickup or fast delivery. White-glove delivery brings it in, sets it up in the room and takes the packaging away. Delivery details and will it fit

120-night sleep guarantee. Take the free 7-minute Dream Catcher pressure-mapping test in store when you buy; if the mattress is not right after the 30-night break-in we help you reselect once, as store credit. Guarantee details

Family-owned since 1912. One store at 200 Tilton Road, Northfield, NJ 08225. Questions about this piece: 609-241-0807.

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Description

The deepest Essentials foam build runs twelve inches — a taller stack of high-density memory foam and firm support foam under the 4-way stretch knit cover, holding the line's firm philosophy with a touch more surface compliance than its shorter siblings.

Nightly back and stomach sleepers get the full-height version of the value-foam idea: silent, motion-free, shaped-holding, and covered by the same 10-year non-prorated warranty as the rest of the family.

Egg Harbor Township, Linwood, and Ocean City shoppers can run the whole Essentials foam ladder — 8, 10, and this 12 — in three lie-downs at The Mattress Store inside our Northfield showroom.

Questions & Answers

How does the 12 Memory Foam feel?

Firm with a slightly deeper handshake than the 8 and 10 — the taller stack adds surface compliance while keeping the firm support philosophy.

What sizes and prices does it come in?

Pricing depends on the size you choose — select one above to see its price.

What warranty applies?

A 10-year non-prorated warranty — the same full-value coverage across the Essentials foam family.

Does it work with an adjustable base?

Yes — the all-foam build flexes cleanly with adjustable bases.

Who should pick the 12 over the 10?

Nightly sleepers who want a more substantial bed — the extra core depth reads as durability and presence, with the same firm feel.

Frequently Asked Questions

Does this work with an adjustable base?

Most current mattresses we carry are adjustable-base compatible. If you're pairing with a specific base, ask our team to confirm the combination before you order.

What does mattress-in-a-box delivery mean?

The mattress ships compressed and rolled in a box. Unbox it on your base, let it expand, and it reaches full shape within a day or two. Foundations and bases are sold separately.

Can I try this mattress before buying?

Yes. The Mattress Store inside our Northfield showroom carries floor models across our brands, and you can take the Dream Catcher pressure-mapping test, powered by X-SensorTech — about 7 minutes, 1,600+ sensors — to see which feel actually fits how you sleep.

What if I find a lower price somewhere else?

Kensington offers a price match guarantee — bring us the price and we'll take a look.

Can I see this before I buy?

You can see this piece or comparable pieces in our two-acre Northfield showroom at 200 Tilton Road — a 4th-generation family store serving South Jersey since 1912.

Specifications

Dimensions

Overall60"W x 80"D x 12"H
Width60"
Depth79.5"
Height12"
Mattress heightStandard (9–12")
Bed sizeQueen

Weight & packaging

Shipping weight65.85 lbs

Materials & construction

FeelFirm

Style

StyleTraditional
Color familyWhite

Not sure it fits through the door or up the stairs? Will it fit? Our delivery guide

Questions & Answers

How does the 12 Memory Foam feel?

Firm with a slightly deeper handshake than the 8 and 10 — the taller stack adds surface compliance while keeping the firm support philosophy.

What sizes and prices does it come in?

Pricing depends on the size you choose — select one above to see its price.

What warranty applies?

A 10-year non-prorated warranty — the same full-value coverage across the Essentials foam family.

Does it work with an adjustable base?

Yes — the all-foam build flexes cleanly with adjustable bases.

Who should pick the 12 over the 10?

Nightly sleepers who want a more substantial bed — the extra core depth reads as durability and presence, with the same firm feel.

Frequently Asked Questions

Does this work with an adjustable base?

Most current mattresses we carry are adjustable-base compatible. If you're pairing with a specific base, ask our team to confirm the combination before you order.

What does mattress-in-a-box delivery mean?

The mattress ships compressed and rolled in a box. Unbox it on your base, let it expand, and it reaches full shape within a day or two. Foundations and bases are sold separately.

Can I try this mattress before buying?

Yes. The Mattress Store inside our Northfield showroom carries floor models across our brands, and you can take the Dream Catcher pressure-mapping test, powered by X-SensorTech — about 7 minutes, 1,600+ sensors — to see which feel actually fits how you sleep.

What if I find a lower price somewhere else?

Kensington offers a price match guarantee — bring us the price and we'll take a look.

Can I see this before I buy?

You can see this piece or comparable pieces in our two-acre Northfield showroom at 200 Tilton Road — a 4th-generation family store serving South Jersey since 1912.

$0 down, 0% interest financing

Furniture: 36 equal monthly payments, no minimum purchase. Mattress purchases of $999 or more: up to 60 months. On the Kensington Synchrony HOME credit card, subject to credit approval. See if you prequalify

Pickup or fast delivery

In-stock pieces are available for pickup or fast delivery. Delivery is white-glove: our crew brings the piece in, sets it up in the room and takes the packaging away. Removal of old furniture or a mattress is available for a charge and has to be arranged when you schedule the delivery. Delivery guide

Price match guarantee

We match an authorized dealer's advertised price on the identical model and configuration; details on the price-match page. Our Ashley prices are the lowest in the region, guaranteed. How it works

Free design services

Kensington design consultants help you choose fabrics and finishes, lay out the room and check the delivery path, at no charge. Consultations are booked by phone at 609-241-0807.

120-night sleep guarantee

Take the free 7-minute Dream Catcher pressure-mapping test when you buy. Sleep on the mattress through the 30-night break-in, and if it is still not right we help you reselect once, as store credit, one per household. Guarantee details

Family-owned since 1912

Fourth-generation family-owned, on Tilton Road since 1968. Stores within our store include the Kensington Design Store, the Mattress Store, the Outdoor Store, Palermo Home, the Kensington Outlet, the Made in America Store, Rooms by K, the JL Store and the La-Z-Boy Store.