4.5 Inch Memory Foam Sofa Bed Mattress Replacement - Fiberglass-Free, Washable Cover for Sleeper and Couch Beds, Queen Size, White (Sofa Not Included)
Condition: New
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Learn more about financing & leasing here.
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90-day returns
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90-day refund/replacement
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.
View our full returns policy here.
Availability:
Only 10 left in stock, order soon!
Arrives
Mar 22 – Mar 23
Recently Viewed
Style: 4.5 Inch
Size: Queen
Features
- Ultra Comfortable: The memory foam layer made of special fiberglass free fabric, is specifically designed to breathe, providing maximum comfort, allowing the user to remain cool throughout the night. Adaptable green tea memory foam hugs the body and promotes freshness for comfortable sleeping all night long.
- Multi-purpose: With a gel soft memory foam layer and a polyurethane foam support base, this sofa mattress is vastly more comfortable than traditional sofa mattresses that either are flat mats or have springs. Our sofa bed mattress replacement can also be placed on a platform bed frame or in a trailer, camper van, hide-a-bed, futon, boat or RV.
- Machine Washable: This plush sofa mattress comes equipped with a removable and washable zipper cover, machine washable & tumble dry low, so cleaning is a breeze. Non-slip fabric on the bottom keeps the mattress confined to the sofa bed.
- OEKO-TEX Certified: The material used in this Quilted Sofa Bed Mattress has passed the OEKO-TEX certification. Our mattresses have a 10-year warranty, if there is any dissatisfaction or problem, please feel free to contact us for support, we will reply as soon as possible.
- Easy Setup:Our mattresses are easy to setup. They can fit all types of frames, including box springs, floors, adjustable beds, foundations, slatted platforms, and flat platforms. Simply wait for 12 hours for the mattress to fully expand to its original shape.
Brand: Dyonery
Size: Queen
Item Weight: 27.15 Pounds
Item Firmness Description: Medium Firm
Top Style: Tight Top
Cover Material: Zipper
Number of Layers: 2
Special Feature: Breathable, Temperature regulation, Removable Cover, Pressure Relief
Color: White
Product Care Instructions: Machine Wash
Product Dimensions: 72 x 58 x 4.5 inches
Item Weight: 27.1 pounds
Manufacturer: Dyonery
Item model number: SofaMattress-4.5-Q
Date First Available: November 23, 2022
Age Range Description: Adult
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Mar 22 – Mar 23
Yes, absolutely! You may return this product for a full refund within 90 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.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Style: 10 Inch
Size: RV King Size
Amazing quality, comfort, and value. The original RV King lost its marginal comfort quickly. This mattress is very comfortable and firm, yet has a slight plush feeling as the memory foam settles. I do not toss and turn anymore and sleep very well. I was worried about the 10 inch height being too tall in my RV but it is actually perfect. I can sit on the end of the bed and comfortably put socks and shoes on. It took about 24 hours for the mattress to fully expand, and I didn’t lay on it during this time, although I was very tempted. Highly recommend. Ditch that RV mattress and buy this one. Your body will thank you.
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Reviewed in the United States on February 25, 2026 by Russ Bunyard
Style: 6 Inch
Size: Twin
Very comfortable mattress for a single bed. It provides great support and helps me sleep better every night. Good quality for the price.
Reviewed in the United States on January 12, 2026 by Kathy Dominguez
Style: 10 Inch
Size: RV King Size
Great mattress! It has the perfect thickness and fits perfectly
Reviewed in the United States on January 15, 2026 by Ellene Fisher
Style: 4.5 Inch
Size: Full
Reasonably comfortable so far. Really good replacement for an old spring pull out mattress. Great if you need medium firmness to your foam mattress. Folds up easily, depending on your comforter may add a bit too much thickness to fold the bed back up but sleep quality, almost better than my bed.
Reviewed in the United States on July 14, 2025 by Dready
Style: 8 Inch
Size: Queen
The memory foam mattress is of excellent sleep quality! Its expansion rate was exactly as described as it was ready for use within 24 hours. It also follows the shape of your body when sleeping on it as well!! I would recommend to anyone!
Reviewed in the United States on February 4, 2026 by J Matthews
Style: 10 Inch
Size: Queen
Excellent material and I recommend them very soft and very comfortable
Reviewed in the United States on February 2, 2026 by Dayana Torres Cruz
Style: 10 Inch
Size: Short Queen
Seems like a very good quality mattress, it took a couple days for it to return to its original size after being unpacked, so just allow some extra time for it to expand. The memory foam seems moderately firm. There didn't seem to be any smell from the mattress out of the plastic, however it could be a problem for some. I have my mattress sitting on a foundation in my RV and it looks like the size that the platform was built for instead of the king size mattress that was originally in it. The mattress weighs about 50 pounds so get some help unpacking it and setting it in place if needed.
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Reviewed in the United States on February 11, 2026 by William Sevier
Style: 10 Inch
Size: Twin
The bed is to squishy I like my beds to be more firm as I’m chunky. There’s no support and this bed made me body aches.
Reviewed in the United States on January 28, 2026 by Samantha Arias