DUMOS 3 Inch Gel Memory Foam Mattress Topper King - Blue Soft Mattress Topper King Size for Back Pain, CertiPUR-US Certified, RV, Camper, CertiPUR-US Certified, Blue
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.
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Availability:
In Stock.
Arrives
Sunday, Oct 5
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Size: King
Item Display Height: 3 Inches
Features
- Gel Memory Foam
- The memory mattress topper is designed with ergonomic optimization for various body parts, ensuring it conforms to different body curves and shapes. It effectively distributes body pressure evenly, allowing for comfortable adaptation to different sleeping positions and ultimately enhancing sleep quality.
- Our mattress topper is skillfully designed using a cooling gel bead injection and vortex technology, precisely engineered to reduce heat and enhance airflow. This thoughtful design ensures that individuals experience a refreshing coolness and superior air permeability, promoting a delightful sensation of freshness.
- Crafted using CertiPUR-US certified materials. Following a thorough analysis conducted by an independent and certified testing laboratory, its content, emissions, and durability surpass the standard requirements. This guarantees an exceptional level of safety and friendliness, particularly for individuals with highly sensitive skin.
- The cooling mattress boasts remarkable elasticity and resists deformation effectively. Installing our mattress topper is effortless. The memory foam topper is compressed and packed for easy transportation. So please put it in a ventilated place for 24 hours and let it return to its original size. In addition, please do not leave the sponge in the sun, it will turn yellow.
Brand: DUMOS
Color: Blue
Size: King
Fabric Type: Gel Memory Foam
Special Feature: Vacuums
Brand: DUMOS
Color: Blue
Size: King
Fabric Type: Gel Memory Foam
Special Feature: Vacuums
Closure Type: Pull On
Product Care Instructions: Dry Clean Only
Water Resistance Level: Not Water Resistant
Age Range (Description): Adult
Material: Memory Foam
Model Name: Memory Foam Mattress Topper King
Number of Items: 1
Manufacturer: DUMOS
UPC: 702417964073
Item Firmness Description: Medium
Product Dimensions: 75 x 79 x 3 inches
Item Weight: 9.28 pounds
Item model number: TPHM3K
Refill: gel
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Oct 5
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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Similar Products
Top Amazon Reviews
Size: Queen
Item Display Height: 2 Inches
This mattress topper has completely transformed my bed. I've bought it twice now, one for myself and one for my daughter. It fits our queen-size mattresses perfectly without shifting, and the thickness is just right for adding comfort without feeling too high or bulky. The foam feels durable and well-made, and it bounces back to shape after use, which gives me confidence it will last. I also love the smooth blue appearance—it looks fresh and high-quality right out of the box. The topper isn’t waterproof on its own, but it pairs easily with a waterproof cover if needed. Setup was simple; I just unrolled it, let it expand for a few hours, and it was ready to go. Overall, it’s soft, supportive, and super easy to use—an affordable way to make any bed or RV more comfortable!
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Reviewed in the United States on August 26, 2025 by Traciz
Size: Full
Item Display Height: 2 Inches
So far, I t feels pretty soft and comfortable. Can’t wait to sleep on it. It’s inflated pretty nicely but I guess I’ll have to wait the 48 hrs for the full expansion.
Reviewed in the United States on September 17, 2025 by VioletDi VioletDi
Size: Queen
Item Display Height: 2 Inches
Nice, after having a waterbed for most of my adult life, I finally bought a regular mattress, but found it to be a bit uncomfortable, so I wanted a foam topper, and didn't want to spend a lot of money, and found this one. Comfortable, took a couple of days to expand fully, not much smell to it, but I did spray some Pooph on it to make it better. It's definitely not a cooling topper, not any different than any other ones. Overall, good topper for the money, hopefully it will last a few years.
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Reviewed in the United States on September 24, 2025 by Lisa Ostlund
Bought it to increase the softness and comfortable of a guest bed, it works well, and sleep better. Actually I don't want the cool features because I live in a city that has to use comforter all year round. But that cooling features only works for about 15 mins, it just like a cooling ice pad that only last for short period of time. Overall I love that mattress topper. Cheap but comfortable.
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Reviewed in the United States on August 8, 2025 by dnschan
Life changing lol, so much pain relief, very very comfortable and perfect on top of my annoying 8 inch spring mattress that gave me a lot of back pain. its very good value for money, took a while to deliver but worth it in the end, it is not easy to keep without sliding though, keep in mind.
Reviewed in the United States on September 15, 2025 by Jessenth
Size: Queen
Item Display Height: 3 Inches
Highly recommend the Dumos 3 inch topper. This topper alone provides me with the comfort that I have been desperately seeking for years. It's firm and keeps me from sinking and as a side sleeper provides all the support I need. No need for a new mattress now.
Reviewed in the United States on September 23, 2025 by Yvonne B
Size: Full
Item Display Height: 3 Inches
Like sleeping on a cloud, highly recommend mattress topper. I spent weeks shopping for the best price and quality mattress topper and finally after a lot of debate settled with this one and couldn’t be happier. It came in a box vacuum sealed I opened it and let it sit for 24 hours and like magic and criticize. Extremely comfortable and very plus with still the right amount of firmness.. I love the cooling feature and how it regulates my body temp throughout the night. If you’re on the fence about this item, just go ahead and get it. You won’t be disappointed.!!
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Reviewed in the United States on August 30, 2025 by Bryce Nearman
This mattress topper feels like a dream... I love how responsive the memory foam is to your body and your shape. When you get up it puffs up very beautifully. I needed a mattress topper for my college dorm room twin xl bed and this definitely got the job done. The directions do say on the instructions once you open it that it takes about 42 hours for the topper to puff up, mine was shipped all the way from California to North Carolina where I reside and it took about 10 to 15 minutes to fully puff up! The color of the topper itself is also nice although it doesn't matter because it will be under sheets. Also the size was perfect for my twin xl bed if I might add. This was a good buy especially for anyone who may have back pain or just a college student who wants a more comfortable bed.
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Reviewed in the United States on September 17, 2025 by Nate Jackson