Siena 8” King Gel Memory Foam Mattress - Medium Firm - 180 Night Trial - Premium Pressure-Relieving Layers - 10 Year Manufacturer Warranty - CertiPUR-US® Certified

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Siena 8” King Gel Memory Foam Mattress - Medium Firm - 180 Night Trial - Premium Pressure-Relieving Layers - 10 Year Manufacturer Warranty - CertiPUR-US® Certified

|91 ratings

Bed Size:King

Material:Memory Foam

Mattress Thickness:8 in

Key item features

Comfort Layers: Features four distinct layers designed for responsive comfort, proper spinal alignment, and effective pressure point relief.
Firmness Level: Offers a medium-firm feel, providing an optimal balance between cushioning comfort and supportive structure.
Motion Isolation: Incorporates motion-reducing foam to minimize disturbances from partner or pet movements during sleep.
Simple Setup: Designed for easy setup, expanding quickly after unboxing and unrolling, ready for use within 24 hours.
Certified Materials: CertiPUR-US certified, ensuring the mattress is made without harmful substances like ozone depleters, mercury, lead, and formaldehyde.

Generated by AI

Specs

Bed size
King
Mattress comfort level
Medium
Mattress type
Memory Foam Mattresses
Features
Mattress-in-a-Box, Cooling Technology, Low Motion Transfer, Breathable Construction
Mattress thickness
8 in
Brand
Siena

Reviews summary

Pros

: Provides a supportive sleeping surface.
: Provides a comfortable mattress at an affordable price.
: Setup process is quick and easy to follow.
: Provides a comfortable sleeping surface.

Neutral

: Offers varying firmness, ranging from too soft to ideal.

Generated by AI

Current price is $349.00

Price when purchased online

Free shipping
Free 90-day returns

Walmart Accident Plan by Allstate

5-Year plan - $44.00

Pro Haul Away Service

Mattress Haul Away - $88.00

How do you want your item?

Ships to

Arrives by Mon, Jun 22

Sold and shipped by ResidentPro Seller

5 stars out of 5, based on 13 seller reviews(5.0)

Free 90-day returns

About this item

Product details

We believe everyone should be sleeping on a truly comfortable mattress. A mattress that is designed to support your body in all the right places - so you fall asleep fast & wake up feeling refreshed! A great sleep shouldn’t cost the earth. You won’t see Siena advertised on TV - we put the highest quality materials into our mattresses so you can enjoy a great sleep at a great price.

180-NIGHT HOME TRIAL and 10 YEAR MANUFACTURER WARRANTY - Rest easy with a Siena mattress. You'll enjoy a 180-night home trial, and we stand by our product – if there’s any defect or flaw in your Siena in the first 10 years, we'll replace or repair it for free.
FOUR LAYERS OF COMFORT - Siena doesn’t compromise on comfort. We might cost a lot less than our competitors, but your Siena mattress sure packs a punch when it comes to responsive comfort, supporting proper spinal alignment, and relieving pressure points. With lots of motion-reducing foam, you won’t be disturbed if your partner or pet moves.
MEDIUM FIRM AND SUPPORTIVE - Finding the perfect firmness is a breeze with Siena. It's medium-firm, striking the ideal balance between comfort and support for a restful night's sleep.
SIMPLE TO SET UP - Just move the box to the room you want to use it in, unbox and unroll your mattress, and watch it expand before your eyes. Your Siena will be snooze-ready in 24 hours.
CertiPUR-US CERTIFIED - Your Siena meets all CertiPUR-US rigorous standards for materials, emissions, product durability and performance. This is an assessment made by independent, accredited testing laboratories. It means your Siena is made without ozone depletors, mercury, lead, formaldehyde, phthalates and other harmful substances that can be in consumer products.

info:

We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.

Specifications

Bed size

King

Mattress comfort level

Medium

Mattress type

Memory Foam Mattresses

Features

Mattress-in-a-Box, Cooling Technology, Low Motion Transfer, Breathable Construction

Warranty

Warranty information

10 Year Manufacturer Warranty

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

Warranty url

https://www.sienasleep.com/mattress-trial-warranty

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Customer ratings & reviews

4.6 out of 5 stars

stars91 ratings52 reviews

How item rating is calculated

Reviews summary

Pros

: Provides a supportive sleeping surface.
: Provides a comfortable mattress at an affordable price.
: Setup process is quick and easy to follow.
: Provides a comfortable sleeping surface.

Neutral

: Offers varying firmness, ranging from too soft to ideal.

Generated by AI

Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.

Sort by |

Showing 1-3 of 52 reviews

May 21, 2026

anonymous

Item details

Bed size: Twin

Material: Memory Foam

Mattress thickness: 6 in

Sold and shipped byResident

5 out of 5 stars review

Verified Purchase

as advertised.works great for me.very good quality.

Helpful?

Mar 9, 2026

Daphnie

Item details

Bed size: Twin

Material: Memory Foam

Mattress thickness: 8 in

Sold and shipped byResident

5 out of 5 stars review

Verified Purchase

Comfortable sort

Helpful?

Jan 8, 2026

Jalena D.

5 out of 5 stars review

Everything from the delivery to

Everything from the delivery to the setting up was super easy and worry free. I needed a better mattress than the one I had for the last 10 years and a nice upgrade. It has been so nice!! I would definitely buy another bed from them in the future! 10/10 recommend :)

Review from Siena

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Siena 8” King Gel Memory Foam Mattress - Medium Firm - 180 Night Trial - Premium Pressure-Relieving Layers - 10 Year Manufacturer Warranty - CertiPUR-US® Certified

Key item features

Specs

Reviews summary

Pros

Neutral

How do you want your item?

About this item

Product details

Specifications

Bed size

Mattress comfort level

Mattress type

Features

Warranty

Warranty information

Warranty url

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