SINWEEK 4 Inch Gel Memory Foam Mattress Topper Ventilated Soft Pressure Relieve Mattress Pad, Breathable Bed Topper, CertiPUR-US Certified, King Size
Condition: New
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30-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 4 left in stock, order soon!
Arrives
Sunday, Jun 8
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Color: 4 Inch
Size: King
Features
- GEL MEMORY FOAM MATERIAL: Our memory foam mattress topper readily conforms to the curves and shape of your body, distributes weight evenly to alleviate pressure points for better sleep.
- MORE COMFORTABLE SLEEP: The gel memory foam material used in our mattresses reduces heat and improves the airflow to refresh the gas permeability; add to the mattress for custom comfort.
- SOFT BUT NOT FOLDABLE: our mattress is soft, do not roll up and store too long after opening, and do not put items on top, which will increase the risk of tearing.
- CertiPUR-US CERTIFIED: Our Gel Swirl memory foam topper is made of CertiPUR-US certified materials. The Gel Swirl memory foam topper meets or exceeds standards for content, emissions, and durability.
- BEFORE FIRST USE: leave the memory foam flatly in a well ventilated area for 48-72 hours until its fully expanded. In addition, we offer a three-year warranty and 24-hour manual customer service to ensure your after-sales service.
- NOTE: The softness of the Mattress Topper is influenced by the temperature. In the cold winter Mattress Topper will become harder.
Brand: SINWEEK
Color: 4 Inch
Size: King
Special Feature: Durability,Foldable
Closure Type: Pull On
Brand: SINWEEK
Color: 4 Inch
Size: King
Special Feature: Durability,Foldable
Closure Type: Pull On
Product Care Instructions: General care instructions as needed for a mattress cover
Water Resistance Level: Not Water Resistant
Material: Memory Foam
Number of Items: 1
Manufacturer: SINWEEK
Age Range (Description): Adult
UPC: 754525795360
Product Dimensions: 74 x 38 x 2 inches
Item Weight: 29.7 pounds
Refill: memory-foam, gel
Batteries required: No
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Jun 8
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.
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.
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Top Amazon Reviews
Color: 2 Inch
Size: Twin
Used this on an old spring mattress that is very hard. I didn't have high expectations for it, bc.. I mean... its foam. I couldn't believe how much of a difference it made. It was just the right amount of soft and firm and cushion. When you get a foam topper you think, "Is this thing just going to collapse and make me all uneven?" But it actually worked very well. I told my spouse that I might get more. When it arrived, I allowed it to fully open up for a few hours before I inspected it. When I first took it out, it looked like there might be some damage on one of the edges, but no. It just needed the fully few hours to open up. I would highly recommend it.
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Reviewed in the United States on May 7, 2025 by Summer White
Color: 2 Inch
Size: Twin
I tried an experiment when I received the package and removed it from the box. I actually allowed the mattress foam to expand not just within the bare minimum timeframe which they suggested of 48hrs but I actually waited past the 72 hour mark before sitting or laying on the memory foam. I think it may have made a difference actually allowing it to expand to its full capacity. Just a tip for someone who is considering purchasing this product. It took some discipline but I was able to put off the instant gratification to reap the future full comfortability of the foam mattress. So far so good!
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Reviewed in the United States on May 17, 2025 by SunTzu4Ever
Color: 2 Inch
Size: Twin
I had to temporarily set up a pallet on the floor while my mother visited and used my bed. The chair I have that folds out into a "bed" is fine napping on, but to sleep on it all night caused me back pain, so after researching and reading lots of reviews, I settled on this mattress topper and I'm glad I did! It has has made a world of difference! My only regret is that I bought the 2 inch topper and I wish I wouldl have bought the 4 inch.
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Reviewed in the United States on May 14, 2025 by Lisa
Color: 2 Inch
Size: Twin
This mattress makes a Great difference in the comfort. Well worth every dollar. Perfect for kids dorm as well as your bed. Upgrade to the 3” and Wow
Reviewed in the United States on May 13, 2025 by Diane
Color: 2 Inch
Size: Twin
Bought the 2 inch twin size for my daughter’s spring mattress because she was complaining she could feel all the springs when she lays down. I slept on her bed and at 210lbs let me tell you, that mattress itself was trash. Ordered this topper, unboxed and fluffed the compressed areas just like the video suggests. Took all of 3 minutes to get it fully decompressed. The topper has a slight odor but that’s expected so no big deal. Letting the topper air out for a few hours got rid of the smell as far as I can tell. Tested the mattress with the topper and couldn’t feel any springs while laying on it. We’ll see how it holds up over time but as of now, I’m 100% satisfied.
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Reviewed in the United States on April 23, 2025 by Drew
Color: 2 Inch
Size: Queen
No photo to describe my satisfaction After unwrapping the topper I used a hair dryer to accelerate the process of getting bigger in the corners, I put the waterproof cover on top of the topper, then I covered with my sheets and I really enjoyed the soft sensation of sleeping with this product! I purchased the 2in and worked perfect to me Very recommended!!! Worth it !!!!
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Reviewed in the United States on May 11, 2025 by Amanda F.
Color: 2 Inch
Size: Twin
This mattress cover was comfortable, but us too large for a twin bed. I found out too late that it is not washable. I'd give it four stars for comfort, but 1 star for not being washable. i had to throw it away,
Reviewed in the United States on May 11, 2025 by Long409
Color: 2 Inch
Size: Twin XL
SO much better than sleeping on a college dorm provided mattress. Helps with back pain, didn't eliminate entirely. I'm a side sleeper. You get what you pay for. The added height to the mattress can make it kind of challenging to put on sheets. It's worth it.
Reviewed in the United States on May 10, 2025 by Ian D Ian D