The Siena Signature 12 Inch Memory Foam is a five-layer all-foam mattress built around 2 inches of contouring memory foam, sold at a Queen price of $379 with a 180-night home trial and a 10-year warranty. It is a Best Seller in Siena’s lineup and carries 843 reviews. If you want a medium, cushioned feel with pressure relief and motion control at a price that does not stretch the budget, this is the Siena model to look at first.
This review is part of our guide to the best memory foam mattresses, where the strongest models are compared side by side.
Our pick
Saatva Classicthe upgrade pick if you want in-room setup and a lifetime warranty
- 365-night home trial
- Free white-glove delivery and old-mattress removal
- Lifetime warranty
- Three comfort levels and two heights, including Lumbar Zone support
Who is the Siena Signature 12 Inch Memory Foam for?
The Siena Signature 12 Inch Memory Foam suits budget-focused shoppers who want a medium, cushioned feel with real memory foam contouring rather than a thin comfort layer. It fits single sleepers and couples who value motion control, since Siena describes the stability foam layer as minimizing movement so nighttime disturbances stay put.
It is a strong candidate for guest rooms, first apartments, and starter bedrooms, where the total spend matters more than premium service. Siena backs the foams with CertiPUR-US certification and fiberglass-free construction, which matters to shoppers who want to know what the foam is made of before buying. If your priority is a low entry price with a clearly described five-layer build, this model earns its place on the shortlist.
What does the construction actually include?
Siena builds the Signature 12 Inch Memory Foam in five layers, topped by a breathable fabric designed to keep air moving across the surface. Below that sits the 2-inch contouring memory foam layer, which adapts to body shape and eases pressure points. The third layer is an extra comfort foam that adds softness and boosts the memory foam’s pressure relief. A stability foam layer forms the sturdy base, holding structure and limiting movement across the mattress. The full stack stands 12 inches tall.
The layer order matters for feel. Memory foam and extra comfort foam sit directly under the cover, so the first sensation is cushioning and contouring rather than pushback. The stability base underneath keeps the surface from bottoming out, which is what gives the mattress its medium, cushioned support character. Siena describes the design as pressure-relieving across the entire body, and the breathable top is positioned as the cooling element in an otherwise all-foam build.
How does it feel to sleep on?
Siena rates this mattress as Medium with cushioned support, which translates to a balanced feel: enough give for side sleepers at the hips and shoulders, and enough underlying support for back sleepers who do not want to sink deeply. The 2 inches of memory foam do the contouring work, while the extra comfort foam adds a softer top layer for people who want more cushion than a firm foam bed offers.
Because the comfort layers are foam rather than coils, the surface responds slowly to movement. That favors sleepers who like a hugged, cradled position over a floating-on-top feel. Combination sleepers who change positions often will notice the foam conforming as they move, which is normal for a memory foam build of this type. The stability layer underneath keeps the mattress feeling consistent from edge to center, so the support does not change noticeably as you shift.
How is it for cooling and motion?
Siena positions the breathable top fabric as the cooling feature, describing it as lightweight and designed to promote airflow so you stay comfortable through the night. The mattress does not include gel infusions or phase-change materials in its listed construction, so the airflow from the cover is the cooling story here. Shoppers who sleep hot should weigh that against a coil-based or actively cooled design.
On motion, Siena states that the mattress design keeps movement in place, so nighttime motion does not pull you out of sleep. The stability foam layer is the component credited with minimizing movement and maintaining structure. Couples should read that as a design intent rather than a guarantee, since motion transfer depends on weight, position, and how abruptly a partner moves.
What does the Siena Signature 12 Inch Memory Foam cost?
The Queen size is listed at $379, and Siena shows a total value of $1,332 against that price. The brand also advertises Siena mattresses starting from $179, which applies to smaller sizes and entry configurations. Siena offers 0% APR financing with monthly payments, and the mattress ships in 1 to 2 days when in stock. Shipping and returns are free.
| Detail | Siena Signature 12 Inch Memory Foam |
|---|---|
| Height | 12 inches |
| Layers | Five, including 2 inches of memory foam |
| Firmness | Medium, cushioned support |
| Queen price | $379 |
| Trial | 180 nights |
| Warranty | 10 years |
| Shipping | Free, ships in 1 to 2 days |
| Foam certification | CertiPUR-US certified, fiberglass-free |
See the Saatva Classic price in your size →
What do the trial and warranty cover?
Siena includes a 180-night home trial with the mattress, which the brand describes as six months to try the mattress in your own home. Shipping and returns are free. The warranty runs 10 years, and Siena states that any defect in the first 10 years will be repaired or replaced at no cost. Siena also runs a 30-Day Price Match Guarantee, which protects the purchase price in the first month.
Financing is available at 0% APR, so the Queen price can be split into monthly payments without interest. Siena’s support team is reachable seven days a week by chat, email, or phone at +1 (844) 973-4717, which is useful if a question comes up during the trial window.
Who should NOT buy the Siena Signature 12 Inch Memory Foam?
Skip this mattress if you sleep hot and want active cooling. The construction lists a breathable top fabric as the cooling element, with no gel or phase-change layer in the five-layer stack, so an all-foam bed of this type will hold more heat than a coil or latex design. Also skip it if you want a firm or extra-firm surface, since Siena offers this model only in a medium, cushioned feel. Shoppers who prefer a floating-on-top feel rather than a cradled one will find the memory foam contouring works against that preference.
It is also the wrong pick if you want premium delivery service. Siena ships the mattress in a box with free shipping, not in-room setup with old-mattress removal. Finally, if you want a hybrid build with coils, that is a different Siena model: the Siena Signature Hybrid pairs foam comfort layers with individually wrapped coils in a separate 12-inch design.
How does it compare to the Saatva Classic?
The two mattresses sit at very different price and service tiers. The Siena Signature 12 Inch Memory Foam is an all-foam build at a $379 Queen price, shipped in a box with free shipping. The Saatva Classic is an innerspring mattress with a dual-coil design, a 3-inch Euro pillow top, and three comfort levels, listed at $1,904 on sale against a $2,229 regular Queen price. Saatva includes free white-glove delivery with in-room setup and old-mattress removal, a 365-night home trial, and a lifetime warranty.
The choice comes down to budget and service. Choose Siena if the upfront price is the deciding factor and a boxed all-foam mattress fits your room. Choose Saatva if you want the mattress set up in the room, the old one taken away, a full year to decide, and a warranty that lasts as long as you own it. Saatva also offers Lumbar Zone technology for spinal alignment and is endorsed by the American Chiropractic Association, which matters for shoppers focused on back support.
The verdict: the Siena Signature 12 Inch Memory Foam is the budget pick for shoppers who want a medium, cushioned all-foam mattress with 2 inches of memory foam, a 180-night trial, and a 10-year warranty at a $379 Queen price. It is not the pick for hot sleepers, firm-surface seekers, or anyone who wants in-room delivery. For that profile, the Saatva Classic is the better fit.
Our pick
Saatva Classicfor sleepers who want setup, a year-long trial, and a lifetime warranty
- 365-night home trial
- Free white-glove delivery and old-mattress removal
- Lifetime warranty
- Plush Soft, Luxury Firm, and Firm comfort levels
World Sleep Almanac score: 7.6/10
The World Sleep Almanac editorial score for the Siena Signature 12 Inch Memory Foam is 7.6/10, based on five criteria: price at equal size, trial and returns, warranty length, materials and construction, and public customer reviews. The score is an editorial judgment, not a lab result. On price, the $379 Queen figure is among the lowest in its category, which pulls the score up. The 180-night trial and free returns are solid for the price tier. The 10-year warranty is standard rather than exceptional. Materials score well with CertiPUR-US certified foams and fiberglass-free construction. The 843 public reviews give a real base of customer feedback to weigh.
A useful companion to this page: our Siena Essential 8 Inch hybrid review.
Frequently asked questions
How long does the Siena Signature 12 Inch Memory Foam take to expand after unboxing?
Siena ships this mattress in a box with free shipping, and it arrives in 1 to 2 days when in stock. Like any compressed foam mattress, it needs time to reach its full 12-inch height after unrolling. Siena does not publish a specific expansion window, so plan to give it room and time in the bedroom before first use.
Is the Siena Signature 12 Inch Memory Foam good for couples?
Siena describes the stability foam layer as minimizing movement so nighttime motion stays put, and the brand states the mattress design keeps movement in place. That makes it a reasonable option for couples who want an all-foam build at a low price. The medium, cushioned feel also gives both sleepers a balanced surface rather than a firm one that one partner may reject.
Does the mattress contain fiberglass?
No. Siena states that its mattresses use fiberglass-free construction, and the foams are CertiPUR-US certified. CertiPUR-US certification applies to the foam and its program criteria for what the foam is made without, and it is separate from any comfort or durability rating.
What happens if I want to return it during the trial?
Siena includes a 180-night home trial and free shipping and returns, so the mattress can be sent back within the trial window at no shipping cost. Siena also runs a 30-Day Price Match Guarantee if the listed price drops shortly after purchase.
Can I finance the purchase?
Yes. Siena offers 0% APR financing with monthly payments on the mattress, so the $379 Queen price can be spread over time without interest. Details are shown at checkout.
Reviewed by the World Sleep Almanac editorial team. Last updated October 2026.