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SINWEEK

SINWEEK 4 Inch Gel Memory Foam Mattress Topper Ventilated Soft Mattress Pad, Bed Topper, CertiPUR-US Certified, King Size, Purple

    • Based on 3,842 reviews
Condition: New
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$149.99 Why this price?

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This item is eligible for return within 30 days of receipt

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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, May 21
Order within 23 hours and 22 minutes
Available payment plans shown during checkout

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


Water Resistance Level: Not Water Resistant


Age Range (Description): Adult


Material: Memory Foam


Package Dimensions: 38.6 x 13.2 x 12 inches


Item Weight: 29.7 pounds


Manufacturer: SINWEEK


Batteries required: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 21

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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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Best Investment for the Price
Color: 3 Inch Size: Full
There is NO REASON to pay the inflated prices for the other mattress toppers on the market that are exactly the same. The one we ordered is 3" thick, memory foam, soft (but not extremely so), and fit our full/queen perfectly. I have extreme pain from chronic disease, and this topper alleviates all of it. It sleeps cool, which is a plus considering my fiancé and I cuddle up together in our sleep. After sleeping on it over a month and a half, it is extremely durable, and hasn't shown signs of any wear and tear. It makes zero noise. It did take about an hour and a half to "fluff up" to full size once it comes out of the box because it is memory foam and ships compressed, but it didn't have any strange odors except maybe some mild plastic odor from the packaging around it. I would highly recommend this, and I have tried the 300$ competitors. You won't regret this purchase. ... show more
Reviewed in the United States on November 2, 2023 by Amanda Rushton
    • Comfort and price great !
Color: 3 Inch Size: Twin XL
Bought it for my granddaughter. She was so happy with it. She is in college and lives on campus. The mattress’s are not comfortable at all and getting rest was so hard for her. She has thanked me over and over. I am 100% satisfied . College bed size is twin x-long
Reviewed in the United States on January 22, 2024 by DeLois Fisher
    • An ok choice, not the best.
Color: 3 Inch Size: Full
I’ve been looking for a replacement for my super soft 2 inch Walmart memory foam topper that I love and have had for years but because it’s been years I don’t know the brand to get another lol. I was eyeing this topper and got it on Black Friday deal which is exactly what I recommended whoever reading this to do. This topper is very dense, not hard but dense, I got the 3 inch full size and it’s definitely not as soft or slow to puff up as my old Walmart memory foam topper, one review before I got it said this topper is “medium- soft” I’d say it’s more medium and the surface is a little rough but the middle is softer, I live in a warmer area so it’s not the foam reactiving to the environment either it’s just not the softest topper in the world. I think because it’s so dense, not hard but dense, it makes my bed a little firmer and it’s definitely made my platform bed taller. It’s a very ok topper, not the softest or the hardest, get it on sale. I don’t “sink” in but I find it is slightly conforming to your body, it’s nothing crazy like a water bed, it’s just overall an ok topper. ... show more
Reviewed in the United States on November 26, 2023 by Deva Wimbley
    • Love it!
Color: 2 Inch Size: Twin
I'm hot sleeper and every time I got a matress pad they were always hot and I hate it! So, I was skeptical about this product but decided to give it a try. BEST DECISION I MADE LOL. Very soft but gives me enough support, so no more back and shoulder pain! IT DOESN'T GET HOT WHILE YOU SLEEP AND I LOVE THAT! ... show more
Reviewed in the United States on January 27, 2024 by Lina
    • So comfortable, great value
Color: 4 Inch Size: Twin
I really like this twin sized mattress topper. When I first bought it, I was worried it was too small for my twin bed. However, after 24 hours, it fully expanded to the correct size. It turned my hard memory foam mattress into a soft cloud, and I really love it. I got the 4 inch kind, which I was hesitant about because I thought it might be too cushy, however, I’m very happy with it. It did take a couple of days for the chemical smell to dissipate, but now it’s fine, and I absolutely love it. It makes sleeping on my side easier. I also bought a softer memory foam pillow to complement the softer mattress topper. Others in the reviews have mentioned that the topper can rip easily, and this is true— it is heavy but delicate, so when you lift it to place it on the bed, be careful not to let it tear. However, now that it is on the bed, it is fine. This was a great and relatively cheap investment. I have had the topper now for several weeks, and still love it. ... show more
Reviewed in the United States on October 11, 2023 by Alexandra Spark
    • So comfy!
Color: 2in With Cooling Cover Size: Twin
I bought this to ease the stiffness of my mattress and it’s perfect. No smell, comes up to size overnight and fits well. I hesitated to order it for fear of having to pack it up and send it back. Nope, it’s staying
Reviewed in the United States on January 12, 2024 by Andrea
    • Stiffer than Spring Mattress alone
Color: 2in With Cooling Cover Size: King
This foam is very dense. We got the purple 2inch with cover. We had a 3” walmart memory foam topper on our old bed. We upgraded to king size and went with the same mattress just bigger. But we decided to try a thinner mattress topper because it was a little soft before. This one is way too stiff. Sitting on it feels like sitting on wood. Laying on it feels like laying on sand at the beach. It will move a bit to conform but it’s still stiff and hard under you. It’s so slow to conform. It has been leaving pressure point stiffness on both my wife and I on hips, knees and arms. Going to have to try something else. The cover is nice though actually. ... show more
Reviewed in the United States on January 19, 2024 by Kenneth Kniffin
    • Feels like a new bed
Color: 2in With Cooling Cover Size: Twin
I couldn't find a twin bed that was the right size to replace a cheap spring mattress. Figured I'd try a topper in the meantime. Now I don't have to buy a new mattress! I bought the 2" model, which is very comfortable. I can only imagine the 3" would be more comfortable. The cover saves you $ and time. Well worth it. ... show more
Reviewed in the United States on January 11, 2024 by A. Santiago

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