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SINWEEK

SINWEEK 4 Inch Gel Memory Foam Mattress Topper, Queen Size

  • Based on 607 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Sep 21
Order within 20 hours and 45 minutes
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Size: Queen


Style: 4 Inch


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 cooling gel mattress topper reduces heat and improves airflow, keeping you dry and comfortable all night. Customize your sleep experience for the perfect balance of softness and support.
  • SOFT BUT NOT FOLDABLE: Our mattress topper is soft and comfortable, but do not roll it up for long-term storage after opening, and avoid placing heavy items on top to prevent 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.
  • IMPORTANT: This product is intended to be used on top of an existing mattress and is not designed for standalone use.

Description

The mattress topper has holes for ventilation to promote air circulation and enhance refreshing comfort, increaseing airflow and breathability to help regulate body temperature while you sleep. This mattress topper is made from dense gel memory foam that snugly fits around your body to relieve pressure and provide optimum support for comfortable deep sleep all night long. Wake up feeling refreshed and energetic all day. Certified by CertIPUR-US, ensure your uncompromising safety Topper is compressed, rolled, boxed, and shipped right to your front door. Leave the memory foam flatly in a well ventilated area for 48-72 hours until it’s fully expanded.

Brand: SINWEEK


Color: 4 Inch


Size: Queen


Fabric Type: Memory Foam


Special Feature: Cooling, Durability


Brand Name: SINWEEK


Age Range Description: Adult


Number of Items: 1


Manufacturer: SINWEEK


UPC: 754525795353


Unit Count: 1 Count


Number of Packs: 1


Model Number: MTDK-CA


Other Special Features of the Product: Cooling, Durability


Closure Type: Pull On


Water Resistance Level: Not Water Resistant


Item Firmness Description: Soft (can become harder in cold temperatures)


Fabric Type: Memory Foam


Product Care Instructions: Dry Clean Only


Material Type: Memory Foam


Thread Count: 250


Size: Queen


Color: 4 Inch


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Sep 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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  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Firmer than expected
Size: Queen Style: 4 Inch
Review Image by tlark
*Update* customer service has reached out and was willing to fairly rectify the situation. Although the mattress topper did not fit my needs, their concern was to ensure that I was completely satisfied. I truly appreciate the prompt response, when reaching out regarding the product, and the follow up afterwards. Because of this I am changing my review rating, of my own volition. I feel it is only fair to review the product based on product quality and customer service. As stated before this mattress topper may have been perfect for someone else. However, it did not work for me. The product is still of excellent quality and customer service is great. It is my hope that the company continues to ensure great customer relation. ***Original review***This topper was not what I expected and I am truly disappointed. After carefully reading the listed product’s details and reviews, I decided to purchase this topper in hopes of achieving a better nights sleep from my current mattress. After sleeping on the topper, I have now experience body pain when waking up. According to the listing, this topper is advertised as on the softer side as to opposed to firm. Unfortunately, this is not the case. I have tried it for 2 nights and wake up with pain each time. It is very difficult to sleep on because of its firmness rendering it unusable. There is absolutely no way of returning it after expansion so be sure this is the one for you. It is true to size and a quality foam topper, just not what was expected based on listed information. Just be mindful that it is firm, so for those looking for a firm topper, this is defintely the one for you. If you are looking for a softer topper, continue to do more research. I have reached out to customer service for advisement, and I did get an immediate email back regarding my issue. It is my hope that a fair resolution can be reached. I am giving it a one star review due to the inaccuracies of the listing and the inconvenience it has caused. I will update my review regarding customer service quality soon.... ... show more
Reviewed in the United States on November 29, 2025 by tlark
    • So comfortable, great value
Size: Twin Style: 4 Inch
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
    • Great for college dorm beds
Size: Twin Style: 4 Inch
Very comfortable mattress topper. Especially for college dorms
Reviewed in the United States on August 18, 2026 by Amazon Customer
    • Very comfortable
Size: Twin Style: 4 Inch
We got this mattress topper for our guest bedroom. Very comfortable. Provides adequate memory foam for our guests. Fits our daybed.
Reviewed in the United States on August 14, 2026 by Sharon Paredes
    • Very nice sleep
Size: Full Style: 4 Inch
Great value for the price. The cooling gel on mine only runs down the middle. Appears to be seconds, but the price was worth it
Reviewed in the United States on July 8, 2026 by Hobo Juanita
    • Stuck with Junk
Size: Twin Style: 4 Inch
Terrible quality and did not fully expand so some parts are sunken in. Amazon says the only option I have is to return it but once you open the vacuum sealed wrap, there is no way to put the huge topper back in a bag or box.
Reviewed in the United States on July 24, 2026 by Mariah
    • Pricey but good quality
Size: Twin XL Style: 4 Inch
It's really pricey and super firm after you open it and let it take shape, it'll take a while to break it in.
Reviewed in the United States on February 8, 2026 by TheSpookyCatLady
    • To thick
Size: Queen Style: 4 Inch
It’s to thick. I feel like a walrus
Reviewed in the United States on July 8, 2026 by Glade Hardy

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