WhatsBedding

WhatsBedding 5 Inch Memory Foam Mattress Topper King Size for Back Pain Relief with Cooling Breathable Bamboo Viscose

4.4(46)

80+ bought in the past month

$83.98$139.99

About this item

  • [Breathable and Skin-Friendly] This mattress topper is made of natural Bamboo Viscose, which is skin-friendly and breathable. It provides warmth and comfort in winter and coolness and breathability in summer, allowing you to enjoy a comfortable and soft sleeping experience in any season.
  • [Extra Thick and Soft] This 5-inch thick mattress topper is filled with 2000GSM high-density shredded memory foam and a thickened down alternative lining. It offers a soft touch and strong support – providing a comfortable angle and relieving back pressure regardless of your sleeping position.
  • [Exquisite Quilting Design] The grid quilting design secures the internal shredded memory foam in place, preventing long-term sagging and eliminating the need for frequent adjustments. It adds a stylish textured look, enhances the mattress's aesthetics, and improves durability.
  • [Elastic Straps] This mattress topper comes with 4 secure elastic straps to fasten it to the edges of your mattress. Even when you toss and turn or adjust your sheets, it stays in place without shifting or sliding. It remains stable throughout the night for continuous comfort.
  • [Warm Reminder] Our mattress topper is vacuum-compressed for packaging. Due to the lack of air, it may not appear thick enough upon opening. Please gently pat the mattress cover and let it sit for 24 hours to achieve optimal fluffiness. Whatsbedding is committed to improving the customer shopping experience. If you have any questions or concerns, please feel free to contact us!
$83.98
Was $139.99Save $56.01

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Product details

BrandWhatsBedding
ColorWhite(5in)
SizeKing
Fabric Type39% Bamboo Viscose Air Layer, 61% Polyester
Special FeatureBagged, Pillow Top

Technical specifications

brandWhatsBedding
colorWhite(5in)
sizeKing
fabric_type39% Bamboo Viscose Air Layer, 61% Polyester
special_featureBagged, Pillow Top
closure_typePull On
product_care_instructionsSpot Clean Only
water_resistance_levelNot Water Resistant
age_range_descriptionAll
materialMemory Foam
thread_count400
model_nameMemory Foam Mattress Topper
manufacturerWhatsBedding
product_dimensions80 x 78 x 5 inches
item_weight19.47 pounds
best_sellers_rank#13,044 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #44 in Mattresses Toppers
date_first_availableDecember 20, 2025

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Customer reviews

4.446 ratings
★★★★★

Thick and evenly distributed squares.

AmandaJanuary 10, 2026

Opeing package, zero smell. Each square seems to be filled equally. I left this to fluff up while I went to work, got home and it looks so amazing! Good quality fabric for the case as well. I was super skeptical about buying this as it doesn't have many reviews, and its shredded memory foam, but I am pleasantly surprised. I did lay on it for a brief moment had to test it out...feels so comfortable and thick. I bought a new mattress and was sinking in a little too much and it was causing me to toss all night. I am a side sleeper and pressure relief for hips and knees is a must! I will update this after a few nights of sleep. But as of initial look, seems great! It does look about as thick as it should, I wouldn't say it looks as firm as the picture, but not by much. Its pretty close. I'll update after a rest on it. Update: slept so amazing! My hips and knees loved this topper. I drifted off to sleep so fast and stayed asleep. I absolutely love it! Read more

★★★★★

Excellent Pillow Topper!!

Laura TrammellJanuary 12, 2026

Finally found a pillow top cover for the mattress that truly is what is advertised!! Opened package and let it take shape and did not disappoint!! Read more

★★★★★

Excellent mattress topper!

SelinaJanuary 10, 2026

This 5-inch memory foam topper completely transformed my bed. It’s very soft but still supportive, and I’ve noticed a big improvement in my back pain. The bamboo cover feels breathable and cool. Highly recommend! Read more

★★★★★

Super soft

SKYEJanuary 14, 2026

Super comfy and helped relieve hip pain. Read more

★★★★★

Feels thick and stays in place

CactusOctober 27, 2025

The topper looked a bit bulky when I first opened it, but after letting it sit out for a bit, it fluffed up nicely. The fabric is decent and the stitching looks okay. I placed it over a regular twin mattress and the straps kept it from sliding around. It added some softness but didn’t make the bed sink in too much. There was a bit of a smell at first (not too strong), which faded after a day. No major issues so far. Packaging was clean and it arrived in good shape. I’m not sure how long it will last, but it’s been fine for what I needed. Read more

★★★★★

Soft and cozy

HannahOctober 28, 2025

I ordered this mattress topper for my daughter because she always said her bed felt too firm, especially in winter. She’s been really happy with how much softer it feels now. The top has that pillow like fluff that makes the bed cozier when she lies down. The corner straps help keep it in place. The fabric feels smooth and cotton-like. I noticed the filling is evenly spread and bounces back after you get up. It doesn’t trap heat either, she stays comfortable even with a blanket on. For the price, it gives that soft, cloud-like comfort she wanted without being overly thick or heavy. Read more

★★★★★

Great Quality and Comfortable Feel

EllisOctober 11, 2025

I’m very happy with this twin mattress topper. It gives the bed a nice layer of cushion without being too soft, making it great for better comfort and balance. The foam feels dense and supportive, and it molds well to the body. The cover has a silky, clean texture and adds a touch of luxury. It fits snugly on the mattress and doesn’t slip around during the night. The material feels breathable, which helps keep the temperature comfortable. Everything about it feels thoughtfully made and well-finished. It’s easy to unpack and set up, and it fluffs up quickly after opening. The topper stays in shape and doesn’t flatten easily. I like how it enhances the bed’s overall feel—just the right amount of softness and firmness combined. The packaging and presentation are also nice, showing good quality control. It’s a great way to improve comfort without buying a new mattress. For its comfort, durability, and design, this twin mattress topper is absolutely worth buying. Read more

★★★★★

Comfortable and soft

AndromedaOctober 19, 2025

I recently added this double-layer memory foam mattress topper to our bed, and it has made a difference. Our old mattress was on the firm side, and I would often wake up stiff, but this topper makes the bed much more comfortable. I was a bit worried about a chemical smell, but it had almost none when I unpacked it, and the quality feels solid. The top layer is a soft pillow-top with shredded memory foam, so it cradles me gently without letting me sink in too much. The cotton cover is soft and breathable, keeping me from feeling hot at night. The elastic straps hold it in place, so it doesn’t shift even when you toss and turn. It’s refreshed our mattress and made the whole bed feel new again. Read more

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