Does Siena give off a smell when opened?

Compressed memory foam mattresses often give off a slightly chemical odor when opened, called off-gassing. We haven't found this to be a significant issue in Sienas (though off-gassing is 100% safe!). If you do notice a faint smell, open a window and it should fade relatively quickly.

How easy is it to return a Siena mattress?

Incredibly easy! All you have to do is get in touch with one of our agents via chat, email, or phone (1-855-913-1789). We'll arrange for your mattress to be collected, and process your refund. Fun fact: all returned Siena mattresses are donated to charity, giving the gift of better sleep to someone who needs it.

Do I have to pay to return my Siena mattress?

Siena returns are always free! If you paid an additional delivery charge at checkout (for those shipping to Hawaii or Alaska), that fee won't be included in your refund.

Do I need to keep any of Siena's packing materials in case I decide to return it?

You don't need to keep any packing materials in order to process a return. Thank goodness, since we don't think you'd be able to get your mattress back in the box!

What is the 180-night home trial?

When you buy a Siena mattress, you get 180 nights to decide if its the right one for you! Easy returns mean you don't have to think twice before giving things a shot. (We do recommend keeping your mattress for at least 30 days before initiating a return – adjusting to any new mattress can take some time.)

Queen

$329

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765 Reviews

Siena 12” Signature Memory Foam Mattress

Name: Siena Signature 12" Memory Foam, Medium Cushioned Support
Brand: Siena
SKU: snfmtwlvbz
Price: 179 USD
Availability: InStock
Rating: 4.6 (765 reviews)

The Siena Signature Memory Foam Mattress features 12” and five layers – including 2” of contouring memory foam – for a comfortable, supportive sleep that doesn’t break the bank.

Available upgrades

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Best Seller

Siena 12” Signature

-$70

5 Layer Construction
Pressure-Relieving Memory Foam

Luxury Feel

Siena 14” Signature

+$70

5 Layer Construction
Extra Comfort Foam
Single Action Cooling

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$329

(Total Value $1,332)

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at 0% APR Financing

Monthly payments as low as

0% APR financing.

IN STOCK

Ships in 2 - 5 business days

180-Night Home Trial

10-Year Warranty

Free Shipping & Returns

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Five layers, great sleep

You and your mattress will spend about a third of your life together. Get to know Siena’s high quality materials – all at a price you’ll love.

Breathable Top

Our lightweight, breathable top fabric promotes airflow to keep you cool and comfortable throughout the night.

Memory Foam Layer

Contouring memory foam offers personalized comfort, easing pressure points and adapting to your shape for a more restorative nightʼs sleep.

Extra Comfort Foam Layer

An added foam layer which boosts the memory foam’s pressure relief and softness, for those looking for a more cushioned sleep.

Stability Foam Layer

A sturdy base layer that minimizes movement and maintains structure, so your sleep stays stable and uninterrupted.

Durable Cover

A durable outer cover that’s built to last, protecting your mattress and ensuring consistent performance over time.

Five layers, great sleep

You and your mattress will spend about a third of your life together. Get to know Siena’s high quality materials – all at a price you’ll love.

1
Breathable Top

Our lightweight, breathable top fabric promotes airflow to keep you cool and comfortable throughout the night.

2
Memory Foam Layer

Contouring memory foam offers personalized comfort, easing pressure points and adapting to your shape for a more restorative nightʼs sleep.

3
Extra Comfort Foam Layer

An added foam layer which boosts the memory foam’s pressure relief and softness, for those looking for a more cushioned sleep.

4
Stability Foam Layer

A sturdy base layer that minimizes movement and maintains structure, so your sleep stays stable and uninterrupted.

5
Durable Cover

A durable outer cover that’s built to last, protecting your mattress and ensuring consistent performance over time.

Product Specs

Comfort you can count on

Premium foam layers work together to relieve pressure and support your entire body. The result? Sleep so restful, you'll wonder how you ever managed without it.

Sleep through anything

Forget about feeling every shift and shuffle. Our mattress design ensures motion stays put, so nighttime movements won't pull you from your sweet, blissful dreams.

Stay cool all night

Our breathable top keeps air moving so you stay at your perfect sleep temperature all night long. Revel in the kind of steady comfort that keeps you sleeping soundly.

We’re not joking: it’s that simple

Move

into the room where your mattress will live

Unbox

and place your mattress onto your bed frame or base

Unroll

your mattress and remove the plastic wrapping

Enjoy

dreamy, comfortable sleep!

Try our 100% risk-free 180-night home trial

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Always there for you (like a true friend)

If you’re tired of budget mattresses that leave you tossing, turning, and sinking into the abyss, Siena has your back—literally. Our mattresses offer full-body support, so you can finally get the restful sleep you’ve been dreaming of.

Less stress, more zzz’s

Affordable mattresses often come with trade-offs—but not ours. Our mattresses are made with CertiPUR-US® certified foams and fiberglass-free construction, delivering safe, worry-free sleep at a price that feels just right.

Sleep on it, 180 times

Better sleep can look different for everyone. That’s why we offer a risk-free 180 night sleep trial: six whole months to try out your Siena mattress in the comfort of your own home.

Covered until 2036

You don’t need to spend the big bucks to get reliable customer support. If there’s any defect in your Siena in the first 10 years, we’ll repair or replace it for free.

Unbox your best sleep

Mattress shopping made simple

*Price reflects the subtotal of current promotion on Siena. Additional shipping fees may apply in AK and HI. Price may not reflect any current promotions or discounts. Last Updated: 01/12/2026.

Siena 12” Signature Memory Foam Mattress

$329