InnerSpace 4.5-inch Memory Foam Full-size Sofa Sleeper Mattress

by Innerspace
Starting at$23599
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ITEM# 13368401
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    • Warranty
      Included Warranty: 10 year Limited Manufacturer
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    Made in USA


    ITEM#: 13368401

    To help you provide guests with a comfortable place to sleep, this innerspace memory foam mattress provides a solution to the uncomfortable sofa bed mattress. The mattress features several layers of comfortable foam and is densely comfortable.

    • Mattress only, sofa not included
    • 3-inch polyurethane base foam layer
    • 1.5 inches of high-density visco elastic memory foam
    • 2.5-pound density
    • Resistant to dust mites and is naturally antimicrobial
    • Temperature sensitive foam adjusts to your body temperature
    • Improves circulation
    • Eliminates motion transfer
    • Never needs turning
    • Disperses your weight evenly
    • Designed for use with sofa beds
    • Meets all flammability standards
    • cotton stretch knit cover included
    • Dry clean the cover

    • Standard is 4.5 inches high x 52 inches wide x 72 inches long
    • Wide is 4.5 inches high x 54 inches wide x 72 inches long

    Memory Foam Tips:
    • Remove from packaging within 72 hours 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.

    Please note: This is the mattress only. Sofa is not included.


    Mattress Type Mattress Only, Memory Foam, Sofa Beds
    Thickness 4.5 Inch
    Memory Foam Type Foam, Memory Foam
    Support Medium
    Mattress Top Tight Top
    Country of Origin United States
    Product Features Bed in a Box, Hypoallergenic, Made in USA
    Recommended Foundation Type Adjustable
    Useful Link Mattresses and Memory Foam
    Dimensions 52.0x72.0x4.5
    Warranty 10 year Limited Manufacturer
    Model Number SM-5272-OSK
    Country of Origin United States

    Customer Reviews

    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    • Most Recent

    • Inner space sofa mattress
      Verified Purchase

      This is a great product!!!

      Read More
      Benghie H. Dec 3, 2017
    • Comfy
      Verified Purchase

      Bought for my RV sofa bed. Guests have claimed its very comfortable.

      Read More
      brenda5304 Dec 3, 2017
    • Mattress
      Verified Purchase

      Comfortable but after a while the bar in the sofa can be I would recommend turning the mattress regularly.

      Read More
      Kathy M. Sep 14, 2017
    • ....
      Verified Purchase

      Just what we expected. Worked great with new sleeper sofa. Guest will love laying on this mattress.

      Read More
      wayne s. Jan 31, 2017
    • so much better than a spring mattress
      Verified Purchase

      I highly recommend these memory foan mattresses for pull out couches. Great improvement from the flimsy spring mattress that they come with

      Read More
      spike1953 Sep 28, 2016
    • Most Helpful

    • A nice upgrade
      Verified Purchase

      I haven't slept on this myself, but my parents recently visited and slept on the mattress and reported it was a big improvement over the coiled spring mattress that came with the sleeper sofa. My father, who has had back surgery and is not slight of build, reported that he couldn't "feel the bar" and had no problems overnight which was quite a change from past visits. My sleeper sofa had smaller dimensions so my choice of mattresses was limited but I am very happy with this purchase, I would certainly buy it again. I am rating this 4 starts only because I don't have first-hand experience sleeping on this item but am sure it is at least "good".

      Read More
      prosperoaw Jan 27, 2011
    • totally unbelievable
      Verified Purchase

      When I first received this item I thought oh great this is going to be returned. This mattress is so comfortable it is totally unbelievable I would rather sleep on it rather than my own bed. My 6' grandson loves it.

      Read More
      ROMEO C. Feb 10, 2017
    • cc
      Verified Purchase

      Great ! Fit was perfect the package was compressed and very easy to handel. My 13 year old sofa bed is more comfortable than it has ever been.

      Read More
      Caroll Apr 6, 2016
    • not memory foam
      Verified Purchase

      never return back to the original thickness as it said .

      Read More
      pcu8 Mar 4, 2016
    • Truly comfortable
      Verified Purchase

      I could sleep on this as well as on a thicker mattress -- good quality, and very little smell (so the sleeper isn't poisoning herself). On the other hand, I couldn't fold it into my sleep sofa. Too thick and unyielding? Or is this sofa bed made only for its original airbed? However, I'm keeping it, because it's much more comfortable to actually sleep on. (Storing it when not in use for sleeping.)

      Read More
      BB Sep 8, 2015

    Questions & Answers

    • Q:

      "Where can I get this exactly sofa or the mattress come with the sofa?"

      • A:

        This is a sofa mattress.

    • Q:

      "Is this item whole sofa with the mattress or just the mattress Thank you !!"

      • A:

        Is this item whole sofa with the mattress or just the mattress

    • Q:

      "Why did you choose this product?"

      • A:

        Great product,great price!

      • A:

        It appears to be more comfortable than the one it is replacing.

      • A:

        The actual mattress in our sleep sofa is unbearable, we hope that this will make a big difference for our guests.

      • A:

        The mattress on our sleep sofa is not firm. People do not want to sleep on sofa. Prefer to sleep on blow up mattresses. I sure hope this helps our guests. There is no bar on our sofa but they complain it feels like one. Lazyboy sleeper

      • A:

        To replace my old sofa mattress

      • A:

        Seemed like the best choice for a couch bed . I read the reviews and that is why I chose this one.

      Read more Read less
    • Q:

      "Innerspace shows "made in the USA" but are the components, including the foam and memory foam made in the USA?"

      • A:

        Hello shskipper, this sofa sleeper is made in the US. I hope this information helps you, have a great day!

    • Q:

      "Hello- What is the weight of the foam mattress?"

      • A:

        Thank you for your question. This is 28 pounds.

    • Q:

      "What are the dimensions of the couch? I see the dimensions for the mattress but not the couch."

      • A:

        The dimensions are : 52.0x72.0x4.5

      • A:

        what is the entire weight of couch and mattress and does couch come apart to get it in the home

      Read more Read less
    • Q:

      "Should I leave the stretch knit cover on the mattress? If so, should I remove the staples that secure it to the mattress?"

      • A:

        The cover is meant to be removeable as it has care instructions. Therefore, you will need to remove the staples.

    • Q:

      "what is the total with"

      • A:

        The width of the wide full mattress is 54 inches and the width of the standard full mattress is 52 inches.

    Shopping Tips & Inspiration

    Shipping & Returns

    Contact Information

    Usually leaves our warehouse in 1 business day. *

    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

    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

    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.