SINWEEK 4 Inch Gel Memory Foam Mattress Topper Ventilated Soft Pressure Relieve Mattress Pad, Breathable Bed Topper, CertiPUR-US Certified, King Size
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This item is eligible for return within 30 days of receipt
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.
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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
Age Range (Description): Adult
Material: Memory Foam
Number of Items: 1
Manufacturer: SINWEEK
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
This product is currently out of stock. Please check back later for shipping info.
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.
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Top Amazon Reviews
Color: 2 Inch
Size: Twin
This memory foam topper turned my lackluster spare bed into a sleep-worthy sanctuary. Before this upgrade, the mattress was pretty forgettable—stiff, bland, and only slightly better than a nap on folded laundry. But this topper brought instant plushness, with just the right balance of support and sink-in comfort. Setup was easy: unpacked, fluffed up within a few hours, and didn’t have any overpowering odors. Guests have actually complimented the sleep quality—one even asked if I replaced the entire mattress. (Nope, just added magic on top.) Great for turning blah into “ahh.” Perfect add-on for any spare bed that needs a little love without a full makeover.
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Reviewed in the United States on July 15, 2025 by Vanessa
Color: 4 Inch
Size: Twin XL
This SINWEEK 4” Gel Memory Foam Topper is the best sleep upgrade I’ve ever made. It cradles the body perfectly—like being gently held in a marshmallow. The 4 inches make all the difference in the world. It’s soft, cool, and supportive. Honestly feels more like a luxury mattress than just a topper.
Reviewed in the United States on June 25, 2025 by Dino
Color: 2 Inch
Size: Twin
My Bestie is disabled and needs bed support. This came in a small package and was easy to pack for our hotel bed on vacation. It rolled back up tightly like a sleeping bag. This would even be great for camping. Super comfy, great support, good quality. Good price. Ordering another to pack for our upcoming cruise.
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Reviewed in the United States on June 6, 2025 by Ken Ken
Color: 2 Inch
Size: Twin
Very comfortable topper. Helps a lot with hip pain. I recommend it!
Reviewed in the United States on July 15, 2025 by Bookworm
Color: 2in With Cooling Cover
Size: Full
This worked out perfectly. I got this to replace my old mattress pad for my suv. It feels amazing and folds up smaller and easier than my old one. Its also alot lighter. It is easier to haul around from house to car than from car to house. I got the one with the cover because it will fit the pad exactly and keep it clean and lasting longer. Mine came in a tiny box nice and compressed but when I opened it it only took 2 minutes to expand out. Definitely not 24 hours. It did not stink and was ready to go right out of the box. Fluffed up way quicker than I expected it to. Very happy I got the full size mattress and have a gmc acadia for size comparison. Fits perfectly
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Reviewed in the United States on July 17, 2025 by Justine Justine
Color: 2 Inch
Size: Twin
Daughters used in her summer camp bunk. She said it was the best sleep she ever had. Super soft and seems pretty durable. Comes packaged well. Make sure you open it up a day before you need to use to give it time to expand.
Reviewed in the United States on July 16, 2025 by MB
Color: 2 Inch
Size: Twin
Sensational! I just purchased mine and placed it on my bed and tried it... an hour later I got up--no, I didn't fall asleep... I was just enjoying the feeling of floating. It was amazing! I will be getting this topper on all of the beds in my house.
Reviewed in the United States on July 15, 2025 by Angela A Stanton, PhD
Color: 2 Inch
Size: Twin
Smells bad. Worse than a different item. Easy to open and use. Not the same quality after only two months.
Reviewed in the United States on July 4, 2025 by Taylor C