Siena 6" Twin Foam Mattress - Medium Firm - 180 Night Trial - Premium Pressure-Relieving Layers - 10 Year Warranty - Mattress in a Box - CertiPUR-US Certified
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This item is eligible for return within 30 days of receipt
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
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Availability:
In Stock.
Arrives
Thursday, Jul 10
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Size: Twin
Style: 6" Foam
Pattern Name: Mattress
Features
- 180-NIGHT HOME TRIAL & 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 theres any defect or flaw in your Siena in the first 10 years, we'll replace or repair it for free.
- THREE LAYERS OF COMFORT - Siena doesnt 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 wont 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.
Description
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.
Brand: Siena
Size: Twin
Product Dimensions: 75"L x 38"W x 6"Th
Top Style: Tight Top
Cover Material: Polyester Blend
Number of Layers: 3
Fill Material: Memory Foam
Special Feature: Simple to Set Up, Durable, Pressure Relief, Adjustable, Breathable
Color: White
Model Name: Siena
Product Dimensions: 75 x 38 x 6 inches
Item Weight: 18 pounds
Manufacturer: Siena Mattress
Country of Origin: USA
Item model number: snfmsixbz-stwin
Thickness: 6 Inches
Refill: Memory Foam
Form Factor: Day Bed
Care instructions: Hand Wash Only
Assembly required: No
Batteries required: No
Included Components: Mattress
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Jul 10
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Learn more about financing & leasing here.
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Top Amazon Reviews
Size: Twin
Style: 8” Memory Foam
Pattern Name: Mattress
I couldn’t be happier with this Siena twin mattress! From the very first night, it has been incredibly comfortable. The gel memory foam provides just the right amount of support—medium firm like described—and it gently contours to the body without feeling too soft or sinking in. I bought it for my daughter’s room, but after trying it out myself, I was honestly tempted to get one for our guest room too! It’s perfect for kids, teens, or even adults who like a supportive yet comfy sleep surface. The fact that it came in a box and was so easy to set up was a bonus. It expanded quickly, had no strong smell, and was ready to use that same night. For the quality and comfort it offers, the price is unbeatable. You’re getting premium mattress comfort without the premium price tag. Highly recommend to anyone looking for a budget-friendly mattress that doesn’t compromise on comfort. This one truly exceeded my expectations!
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Reviewed in the United States on June 29, 2025 by Molly
Size: Twin
Style: 8” Memory Foam
Pattern Name: Mattress
If you’re looking for a quality twin mattress that won’t break the bank but still delivers great sleep, this is it. I bought this mattress for my daughter’s room and cannot believe how comfortable this bed is. It didn’t smell at all and the price is unbelievable for what you’re getting! My son now wants the same one!
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Reviewed in the United States on June 30, 2025 by Lisa Mahan Lisa Mahan
Size: Twin
Style: 8” Memory Foam
Pattern Name: Mattress
This mattress is nice overall. I can definitely understand why some would think it’s too firm, but I find it rather comfortable. It definitely forms to your body and has ample support. Ended up raising to just shy of 8 inches. I will say that after only having it a week or so I noticed that the gray cover had some spots where the threads were running and creating small holes. I also have to comment on the smell. It has taken literally two months for me to not notice the smell consistently anymore. I aired it out for 24 hours initially and then proceeded to unmake the bed and air it out for over another weeks time, and I could STILL smell it. Despite having all of the windows open and the ceiling fan on high every day for 10 hours. But I am happy with the comfort, and I did not find the price to be unreasonable.
...
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Reviewed in the United States on May 2, 2025 by Amazon Customer
Size: Twin
Style: 8” Memory Foam
Pattern Name: Mattress
I really like this mattress. My body is kinda picky when it comes to mattresses, and I was pleasantly surprised with how well I was able to sleep on this mattress from day one. I used it without any bed frame, and that worked well too! It was pretty easy to set up, just had to let it out of the box (I left mine for almost a day to ensure it gets to its max size). So far so good, will be back here to comment on its build when I have used it for a good amount of time.
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Reviewed in the United States on June 9, 2025 by Aarti
Size: Full
Style: 8” Memory Foam
Pattern Name: Mattress
Item arrived on time. Item is exactly how described. I order this for my 16 year old son as he wanted a bigger bed. It is very comfortable with a medium firm and contours to your body. I was worried that he would be able to feel the road of the bed since it’s only 8 inches thick but nope it’s perfect.
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Reviewed in the United States on June 21, 2025 by Danielle Danielle
Size: Twin
Style: 8” Memory Foam
Pattern Name: Mattress
Soooo comfortable. Perfect. Great value the price omg. I have it on a day bed in a spare room but i would absolutely get a queen if i needed to replace my current mattress. The box had a funky odor but the mattress has absolutely no smell. It was in plastic and i think the odor was those preservative packets at the bottom of the box. Really happy. Plenty of Support and very comfy.
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Reviewed in the United States on June 2, 2025 by Junejune
Size: Twin
Style: 8” Memory Foam
Pattern Name: Mattress
The mattress is very comfortable for an inexpensive mattress. It is worth buying. My kids love it.
Reviewed in the United States on June 29, 2025 by T
Size: Full
Style: 8” Memory Foam
Pattern Name: Mattress
Excellent memory foam mattress. Watch as I was searching for a futon bed mattress and it showed this one. Not exactly what I wanted but good mattress
Reviewed in the United States on June 16, 2025 by Robert Cho