InnerSpace High Density 6-inch Twin XL-size Foam Mattress

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ITEM# 14009789
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    InnerSpace High Density 6-inch Twin XL-size Foam Mattress
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    Made in USA

    This twin mattress is made of high-density poly foam. This mattress is designed to fit all standard size extra large twin beds, with or without box springs. The mattress features plush quilting and cotton blend cover.


    ITEM#: 14009789

    This resilient, high-density polyurethane foam core mattress distributes body weight evenly and eliminates uncomfortable pressure points. This mattress comes with a quilted cotton stretch knit 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 80 inches long
    • Designed to fit all standard size twin XL beds with or without a box spring.
    • Plush quiting on top an bottom
    • Mattress can be flipped if desired
    • Spot clean mattress as needed

    • 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.

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

    Once opened this product is non-returnable.


    Mattress Type Foam
    Thickness 6 Inch
    Memory Foam Type Foam
    Support Medium
    Mattress Top Plush Top
    Product Features Made in USA
    Recommended Foundation Type Bed Slats Box Spring Platform
    Dimensions See details
    Warranty 10 year Manufacturer
    Materials See details
    Model Number OSK-SLT-3880

    Customer Reviews

    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    • For Children Only(no huskies)

      MY nephews say this is comfy they weigh below 90lbs. I had the misfortune of having to sleep on it one night I'm 5'7 135lbs and my butt was sinking to the box spring. Very uncomfortable. Probablly great for lite kids. Adults need to get something with more depth.

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    • Great value at a Steal of a Price!

      We own a tempur-pedic mattress but did not want to invest in an expensive mattress for our daybed. We found the quality of the mattress amazing and the price unbeatable. I hope that guests will no find it so comfortable that they won't leave! Just kidding.

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    • Problem solved

      Amazing! Thought we would never actually see a real mattress. Amazon fixed the error (we received dog mattresses by mistake instead of XL twin mattresses) and our kids now have decent mattresses! They come in small boxes which initially makes you dubious about the quality . . . The minute you pull off the plastic and air hits the mattress, the thin mattress expands! It's quite fun to watch! These mattresses have coils too! Whodathunk that they can vacuum pack coil mattresses like that? Anyway, well worth the wait! Thanks a bunch!

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    • Expanded to listed size!

      I wanted to add to my earlier review that this mattress expanded to full size by the end of week 1. I found it a great mix of soft and firm, very comfortable!

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    • Good

      This was first online purchase of bedding and I am surprisingly satisfied.

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    • Doesn't seem to be full 6 inches

      The mattress took about three days to fully expand, and it feels good to lie on. Sitting on the edge of it makes it compress a bit, but it hasn't warped it. It didn't expand to fit the cover snugly, and I was not able to make it fit properly, so I worry that with use it'll shift and be unattractive. That is my main reason for a rating of four.

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    • It's not a 6 inch mattress

      Mattress never "fluffed" up to be a six inch mattress. It's more like a four inch mattress. Other than that, I would say it's an okay purchase. It is comfortable, but I would have much preferred thicker so my sheets would fit better.

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    • worked well fro trundle bed

      It was nice, right firmness. It felt "solid" in construction. We used this for a top of a trundle bed and used the regular size one for the bottom.

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    Shipping & Returns


    Usually leaves our warehouse in 1 business day. *

    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.
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    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.
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    * 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.