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InnerSpace 6-inch Sleep Luxury Twin-size Mattress

Today: $159.99
MSRP: $385.00 $225.01 (58%) off
Out of stock
ITEM# 14009790

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ITEM#: 14009790

Say goodbye to sleep discomfort caused by low quality, rigid mattresses with this 6 inch luxury mattress from InnerSpace. With a high-density polyurethane foam core, this mattress has been designed to distribute body weight evenly thus eliminating pressure points that cause discomfort. This hypoallergenic mattress comes with a quilted cotton stretch knit cover that is soft to the touch.

You can kiss those sleepless nights goodbye with this high-density mattress that supports every part of your body to reduce pressure that causes sore muscles and keeps you from sleeping well. The mattress is made of high-density poly foam with plush quilting on both sides. The mattress has a stretch knit quilted cotton cover.

  • Mattress measures 6 inches thick
  • Materials: High-density poly foam
  • Cover is quilted cotton stretch knit
  • Dimensions: 6 inches high x 38 inches wide x 75 inches long
  • Designed to fit all standard size twin beds with or without a box spring
  • Plush quilting on top and bottom
  • Spot clean mattress as needed
  • Mattress can be flipped if desired

  • Foam Tips:
  • Remove from packaging within 72 hours of receipt to maximize expansion.
  • This product arrives very tightly packed. Unwrap and allow 48 hours for this product to return to its original shape.
  • Being sealed in plastic packaging sometimes traps odors. After unwrapping, allow product to air for a few hours.
  • Due to machine-cutting manufacturing processes, there may be slight variances in the dimensions of this product.

Firmness level of every item is unique. Please be advised that even similar products may produce different firmness results.

30-Day Comfort Guarantee - If you are not satisfied with your purchase within 30 days, you may return your order for a refund. After 30 days, the mattress cannot be returned.


Mattress Type Foam
Thickness 6 Inch
Memory Foam Type Foam
Density 1.5 Pound
Support Medium
Mattress Top Quilted
Product Features Hypoallergenic
Recommended Foundation Type Adjustable Bed Slats Box Spring Platform
Dimensions See description
Warranty 10 year Manufacturer
Model Number SLT-3875

Product Reviews

5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
  • ms

    great stuffxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

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  • Very comfortable and a great value

    My daughter loves this and it was very reasonably priced.

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  • I love it!!!!

    I love it.... It is so good to sleep there

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  • happy

    the mattress was the first thing I purchased from Overstock I was pleasantly surprised it is an excellent very comfortable mattress

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  • Does not look as advertise

    Does not look as advertised it wasn't worth the price will not order from overstock again customer service was rude

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Questions & Answers

Get your product questions answered right here.
  • Will you be getting more of this product in stock? I am interested in ordering it.

    • Hello Nicole, items are restocked as they become available; however, we cannot guarantee an item will be restocked. Thank you for shopping with us.

  • Why did you choose this product?

    • Customer reviews and price

    • Needed new mattress for a guest twin bed. After reading reviews, decided to take a chance on this one.

    • Because of customer reviews being good.

    • just made sense to get all the pieces at the same time

    • checked the reviews

    • They look like the mattress that came with the bunk beds We are replacing

    • Based on the reviews

    • To go on the Bunk Beds

    • To go in bunk beds

    • its what i needed

    • price

    • on sale

    • Based on the reviews it appears to be a comfortable mattress at a great price. I am putting them on the trundle/daybed.

    • needed a mattress for the bed

    • price and reviews

    • good price. favorable reviews/

    • looked thicker in the picture than the 7 inch for 133.99, has a 10 year warranty instead of the 7 inch's 3 year limited warranty, and this one was almost sold out, indicating people are liking it and buying a lot of it. Thanks for the great website. Great prices! Free shipping! Thanks again

    • ratings, size for daybed, sale price

    • Recommended by Overstock for the daybed I purchased.

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  • What does the 10 year warranty cover, and where is the warranty specified?

    • Hello skuffy, thank you for your inquiry. Unfortunately, the information you have requested is currently unavailable. We will continue to try and answer this for you. You will receive an email notification once an answer is posted. Have a great day.

  • Is this mattress CertiPUR-US certified?

    • Hello jg36, this mattress is not CertiPUR certified.Thank you for shopping with us.

  • Would this mattress work for bunk beds?

    • Yes that is exactly what we use it for. It is great and fits perfectly . Very comfortable ( a little soft for me) perfect for the kids : )

    • Yes, these are great for bunk beds. It also makes it easy to make the top bunk bed because they are light enough to lift up and tuck sheets in.

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  • What is the color? It looks beige but I'm guessing its white?

    • Hello brittnjule, This looks beige or off white when looking at the pillows. Thank you for shopping Have a great day!

    • is light beige

    • It's a cream and beige brocade pattern. Very classy looking in the neutral tones.

    • Mine arrived yesterday. It is beige, not white, and its slip cover has a more "traditional" quilted mattress look to it than some other foam mattresses I have seen. It looks pretty nice.

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  • how does it come packaged?

    • like size wise how big?

    • Hello nicolemaria, The InnerSpace High Density 6-inch Twin-size Foam Mattress arrives compressed, and very tightly packed. we recommend allowing the mattress to expand for 48 hours after opening. The dimensions of the shipping box are 41 inches high x 13 inches wide x 12 inches deep. Thank you for shopping with us.

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  • what kind of chemicals has this mattress been treated with?

    • Thank you for shopping with us hdmommy. The mattress is made from soy and the cover is cotton. I hope that helps.

  • If the mattress is not taken out of the wrapping, can it be returned if it feels too firm? If so, do I pay the shipping charges back or would I get a return label? Thanks.

    • Thank you for your interest in the InnerSpace High Density 6-inch Twin-size Foam Mattress. If the mattress received is damaged, the wrong size or any other defect then we will pay for it to be returned, but, if you receive it and you just don't like the firmness or the color or anything else then it is considered buyers remorse and even if it is unwrapped or unused you will still pay for the return shipping charges. If it is unwrapped or used then you may be able to return it, it would just have to be inspected by the warehouse for problems and then they would decide how much to give you back. It can be anywhere from 10% to 100% depending on the condition and circumstances. We hope this helps out. Have a great day.

  • Is the foam latex rubber or polyurethane foam?

    • Uncover the secret to continuous comfort. Our sleep luxury mattress is 6-Inch of durable, high-density polyurethane foam that conforms to your body and doesn't lose its shape. Additionally, when your spouse gets into bed, you won't roll off or bounce around, because the mattress has independent support and contains no springs. The plushly quilted, stretch knit cover add extra softness and durability. Thank you for your question. Please feel free to contact us again with any further questions.

  • Can this item be used with the durabed steel twin size platform with out a box spring? Also is it the right fit?

    • Yes. My son's bed is a platform bed with slats underneath the mattress and you do not feel the slats and the mattress does not appear to sink into the slats.

  • How is this mattress treated for meeting fire safety regulations? What chemicals are used? I saw a review mentioned cotton and wool, are these materials in the mattress?

    • The cover is a quilted cotton stretch knit cover and we use a fiber barrier under the ticking to obtain flame resistant properties. The fiber barrier is primarily Rayon, and there shouldn’t be any chemicals in the fiber. It is embedded with silica to achieve its flame resistant properties. Thank you for your question.

  • Hi, would this mattress be safe for my 2yr old son who is moving to a bunk bed? Is it too soft?

    • Being sealed in plastic packaging sometimes traps odors. After unwrapping, allow product to air for a few hours. This unit is not made of anything that can hurt or be harmful to the child. The question about being too soft really depends on the person the and their preference.

  • How long does it take for the mattress to fully decompress? I opened this to air out 3 days ago and it is still only 5"

    • It really should have fully expanded by now. Usually 72 hours is about what it takes to do that, but I would give it another day or so, since you are so close to that 72-hour mark. If it does not finish expanding after 4 days, it may be defective, and you will need to contact Customer Service at 1 800 843 2446 to make arrangements for a replacement.

    • It needs to air out for 48 hours.

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  • Can you please find out what is the density in Ibs for this mattress? Thank you.

  • What is the weight of this mattress?

    • The shipping weight is 20 pounds, which is very close to the actual weight.

  • Will this work as a sofa sleeper mattress?

  • What is the recommended weight for this product

  • What is the exact density? 3lb? 4lb? 5.3lb?

  • how firm this mattress is?

    • Out of the 24 reviews on our site 2 people report it as being firm and many others state how comfortable it is. Another site that had less reviews but sold the same product reported this as firm but again comfortable. More of the other site reviewers used firm in their description.

Shopping Tips & Inspiration

Shipping & Returns

Mattress Return Policy:

Mattress Sets are non-returnable upon signature at delivery. Mattresses are non-returnable if opened or taken out of their plastic wrapping.
More Details

Shipping Information:

Our standard shipping method is ground shipping. We also offer expedited shipping for most items. Your final shipping cost and estimated delivery timeframe will be available at checkout.
Standard shipping details
Expedited shipping details

For your protection, all orders are screened for security purposes. If your order is selected for review, our Loss Prevention Team may contact you by phone or email. There may be a two business day delay to process your order.

** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.

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