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SINWEEK

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

    • Based on 5,434 reviews
Condition: New
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$149.99 Why this price?
New Year Deal Ā· 22% off was $192.99

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Returnable until Jan 31, 2025

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: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Jan 8
Order within 21 hours and 36 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: Temperature Control


Closure Type: Pull On


Brand: SINWEEK


Color: 4 Inch


Size: King


Special Feature: Temperature Control


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


Model Name: Purple


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

If you place your order now, the estimated arrival date for this product is: Wednesday, Jan 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.

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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

    • This thing is AWESOME!
Color: 3 Inch Size: Queen
Got the 3" Queen. Opening it up it was as wrinkled looking as a newborn LOL and had me a bit worried, but it fluffed up brilliantly in a few hours. This foam is one that feels a little firm at first, but softens when you lay down on it as your body heats it up, so don't be fooled by how firm it might seem at first - it is, but then it softens and you sink into it and it's so soft and supportive at the same time. I have 3 herniated discs and my old mattress and toppers were starting to break down (they had a good 12 year run, they earned their retirement lol) and got this and a new mattress. I've used lots of toppers - tried many over the years to help with my back and also shoulders, and this one is an amazingly good quality - it's what you want, supportive without totally collapsing it's just brilliant. I'm on the plus side so went with the 3" thick one, but folks of a regular healthy weight would do just fine with a 2" one. Fabulous purchase and worth every penny! ... show more
Reviewed in the United States on December 11, 2024 by Lisa
    • Very comfortable to sit and sleep upon - no complaints!
Color: 2 Inch Size: Twin
I'm staying in a place where the mattress is cheap and the internal support is very evident and can often be felt. I do not have the ability to obtain a better mattress, so I bought this topper in the hope that it would help. It didn't just help; it totally transformed the bed into one that I'm happy to comfortably sleep upon every night. Setup was easy, though I ignored the recommendation to let it sit unrolled for a day to fully expand. I did let it expand for a bit but then started choosing two spots on opposite sides and slowly, gently pulling them apart, doing this in various places but especially anywhere that seemed to be expanding slowly. The mattress had a mattress protector on it that had extra room in it, so I set the topper up inside the protector to help preserve it and prevent it from moving too much. The mattress has a plastic cover so the protector did shift a bit from my sitting on it while leaning against a wall, essentially putting horizontal force on it. Looking online I found recommendations to use anti-slip mats normally used under area rugs, but the store I tried didn't have these. What they did have was rolls of cabinet shelving material designed to prevent things on the shelves from moving about accidentally. Each was six feet long by one foot wide so I bought two and placed them about a foot apart on top of the mattress. Success! The topper stopped moving about and has barely needed any adjustment since then. I'm very happy with my purchase and would buy it again if needed. ... show more
Reviewed in the United States on December 5, 2024 by Perry A.
    • Great!
Color: 3 Inch Size: Twin
My wife used it to help with her back. It helped her get adjust to our firm bed. It helped relieve pain, and was comfortable. The pad was just the right thickness and a good value for the price. No weird smell and highly functional.
Reviewed in the United States on December 2, 2024 by Levi
    • An ok choice, not the best.
Color: 3 Inch Size: Full
Iā€™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 itā€™s been years I donā€™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 itā€™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 ā€œmedium- softā€ Iā€™d say itā€™s more medium and the surface is a little rough but the middle is softer, I live in a warmer area so itā€™s not the foam reactiving to the environment either itā€™s just not the softest topper in the world. I think because itā€™s so dense, not hard but dense, it makes my bed a little firmer and itā€™s definitely made my platform bed taller. Itā€™s a very ok topper, not the softest or the hardest, get it on sale. I donā€™t ā€œsinkā€ in but I find it is slightly conforming to your body, itā€™s nothing crazy like a water bed, itā€™s just overall an ok topper. ... show more
Reviewed in the United States on November 26, 2023 by Deva Wimbley
    • Surprisingly Great
Color: 1.5 Inch Size: Queen
I never write reviews but I had to make one for this because the value is so good. I bought a queen size 1.5ā€ thick topper hoping that it would improve my rooftop tent sleeping pad. I cut it down to the correct size (Full XL) easily, and it made the camping pad so comfy I look forward to sleeping in my tent now. I really didnā€™t expect too much from just 1.5ā€ but it surprisingly provides a lot of cushioned support and doesnā€™t feel like my body just sinks directly through it. Also, it puffed up after unpacking it within like 20 minutes and thereā€™s NO smell at all in my opinion. For the money Iā€™m super pleased with this thing ... show more
Reviewed in the United States on December 18, 2024 by corey stenlake
    • LOVE this Topper.
Color: 1.5 Inch Size: Full
The hybrid mattress I just purchased was a little too hard and springy. Not a fan of just memory foam either. (Toss and turn alot) so I decided on this topper and I'm so happy that I did. Priced low, shipping fast, and perfectly packaged. It was even fun to roll it out and and watch the material do it's thing and of course the best part is how comfy it feels!!! Buy it. ... show more
Reviewed in the United States on November 25, 2024 by kkaysand
    • Exactly as it is supposed to be, excellent
Color: 2in With Cooling Cover Size: Twin
Review Image by netmouse netmouse
Everything was perfect. Out of the box, no smell at all. Expanded mostly within a few hours, by 72 hours was perfectly expanded and even. Comfortable to lie on, with some softness that made shoulders and hips comfortable, and had excellent support. I bought this as a topper for a physical therapy table that was too hard to lie on for exercising. This now could be a spare bed as well. Comfortable. ... show more
Reviewed in the United States on December 26, 2024 by netmouse netmouse
    • Hard, No give to foam, not a memory foam feel
Color: 2 Inch Size: Twin
I had high hopes for this 2ā€ topper, but it is so firm it makes my back/hips hurt. It is not hot, because you do not sink down at all. After sleeping on it for almost a month (quit a bit, as I am recovering from an illness) it is getting a defined slope in spot where I lay the most. It reminds me of a hard/firm foam vs a memory foam. I hardly make a dent in this thing, and am not a lightweight either (160 lbs). I just don't get that memory foam softness, or the foam recovery (because it doesn't sink down) you expect from a typical memory foam. If you want a super-firm feel, this one is for you! No strong odor, only took a couple hours to spring to life after opening. Just too darn hard/firm for me, resulting in sore back, shoulders, and hipsšŸ™ ... show more
Reviewed in the United States on November 15, 2024 by Kimi1208

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