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NihonBy-RA

4.6 Inch Memory Mattress Replacement for Sleeper Sofa and Couch Beds | 4.6 in| CertiPUR-US Certified | Washable Material w(Sofa Not Included)(Full)

  • Based on 65 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Oct 20
Order within 4 hours and 47 minutes
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Size: Full


Features

  • 4.6 in Layered Design mattress combines a 2.6 in firm polyurethane foam base with a 2 in memory foam,(memory foam)that slowly conforms to your body contours and still provides aligning the neck and spine adequate support.(infused memory foam )specifically designed to breathe,Its also ventilated to allow body heat to dissipate,remain throughout the night.
  • Comfort Enhancement and Cleaning: The outer cover of this mattress is made of jacquard embroidered soft fabric for a breathable and lightweight effect, easy and convenient. The bottom fabric consists of a non-slip granular fabric to keep the mattress from shifting and comes with a zipper that can be removed for cleaning.
  • Top Quality Materials: Healthier sleep environment, Our memory foam mattress topper is certified by CertiPUR-US and OEKO-TEX for durability,emissions,performance and content. requirements for an unrivaled sleep experience with a proprietary foam blend that will not lose its shape over time.
  • Multi-functional Use and Installation : The perfect mattress is not only suitable for sofa beds, but also can be adapted to bedrooms, boats, campervans, floors and other scenarios, as well as bed frames of different sizes. The mattress is delivered in vacuum packaging for convenient transportation and to ensure that the first person to touch your mattress is you!
  • SIZE and USE : His Queen size mattress measures 73" x 52" x 4.6" and is newly vacuum-packed, please allow 24 to 72 hours for the mattress to return to its full shape. Experience the ultimate in comfort and support.Due to manual measurement, there may be a slight measurement error of 0.5 to 1 inch.

Brand: NihonBy-RA


Size: Full


Product Dimensions: 73"L x 52"W x 4.6"Th


Item Firmness Description: Plush


Top Style: Gel Top


Cover Material: Polyester


Number of Layers: 2


Fill Material: Gel Memory Foam


Special Feature: Durable


Color: White


Item Firmness Description: Plush


Number of Layers: 2


Additional Features: Durable


Construction Type: Memory Foam


Size: Full


Item Dimensions L x W x Thickness: 73"L x 52"W x 4.6"Th


Item Thickness: 4.6 inches


Item Depth: 4.6 inches


Item Dimensions: 73 x 52 x 4.6 inches


Cover Material: Polyester


Fill Material: Gel Memory Foam


Product Care Instructions: Machine Wash


Mattress Comfort Layer Material: Gel Memory Foam


Material Type: Gel Foam


top-style: Gel Top


Color: White


Style Name: modern


Brand Name: NihonBy-RA


Model Name: fatherf001


Product Benefits: Pressure Relief, Support for Different Sleepers, Spinal Alignment


Model Number: father


Number of Items: 1


Mattress Type: Standard Mattress


Number of Packs: 1


Manufacturer: NihonBy-RA


Unit Count: 1 Count


Age Range Description: Adult


Included Components: memory foam


Manufacturer Part Number: f001


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Oct 20

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.

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Top Amazon Reviews

    • Comfortable mattress for sofa sleeper.
Love it. Firm enough to make sleeping on a sofa bed comfortable. Fit is perfect for a queen sz. bed.
Reviewed in the United States on August 31, 2026 by Grandmagotit
    • Comfortable
Size: Full
Very comrfortable mattress. Inflated to correct size. But...it wouldn't fold into my sofa bed because it was too long. Solved this by using a serated knife and cutting 5 inches off the length, sewed the cover to shorten. Now folds perfectly.
Reviewed in the United States on May 13, 2026 by Kim
    • Quality Mattress Replacement
This seems to be a quality and well fitting replacement mattress. I needed to replace an old sleeper couch mattress. The mattress hasn’t been slept on yet, but it is amazing how the thickness, firmness, and foldability of the mattress made the couch cushions higher and more comfortable to sit on.
Reviewed in the United States on July 5, 2026 by Kaye Bell
    • What a difference a good mattress makes
Very nice, comfortable, and perfect for the pull out sofa on our class A motorhome.
Reviewed in the United States on August 23, 2026 by Wayne Cook
    • Very comfortable. Easy set up.
VERY comfortable. I purchased this to add onto the uncomfortable sofa bed in our motor home. We’ve used it twice now & it sleeps great. So I’m very happy our guests now have a comfortable place to sleep. The removable cover looks great & will make it easy to keep clean. There is a non slip backing so it doesn’t move around. Fits great on our full size. This might seem like a negative but my sofa bed wouldn’t close with this left on top. However, it comes with 2 heavy duty Velcro straps making it easy to roll up for storing on top of the master bed for travel. It was boxed well & vacuum sealed. It was easy to put on top of the bed. It says to let it sit for several hours to get the full thickness. But we used it within an hour & it was fine. As an added plus our friends liked it so much they bought one to put on top of their own bed at home. ... show more
Reviewed in the United States on November 10, 2025 by Shannon Chandler
    • Squeaky
Comfortable but it squeaks, hopefully once it’s broken in, it will be less noisy.
Reviewed in the United States on June 4, 2026 by Linda W.
    • Great replacement for a sleeper sofa.
Size: Full
We recently bought a full sized sofa bed and used it when we had family stay with us. The original mattress was a nightmare (no pun intended) and we barely slept an hour, tossing and turning, trying to get comfortable. We received this mattress around noon and after letting it expand for only 10 hours it slept like a dream (ok..that one was a pun). We did use a thin 'topper' on top of the mattress (it was on the original mattress too), but I don't think it would have mattered it we didn't use it. Great mattress for a sleeper sofa and a reasonable price. ... show more
Reviewed in the United States on January 23, 2026 by Thomas Harris
    • Poorly represented
Worse than the original that came with the sofa. 1. It is not 4.6", it is 3.5" after expanding for over 24 hours. It's so thin I can feel the bar of the frame whereas not with the old one. 2. It is not a true NihonRA mattress from Japan. It is a Chinese company that used a similar name to trick people, according to Gemini but I couldn't find any info on the company other than their trademark application so who knows. Once it's been expanded it's impossible to get it back in the box and return it so I've been screwed out of $190.00. ... show more
Reviewed in the United States on April 25, 2026 by azvampyre

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