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MLILY

EGO 4 Inch King Mattress Topper Gel Memory Foam for Pressure Relief

  • Based on 526 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Sep 12
Order within 20 hours and 12 minutes
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Model: 4 Inch


Size: King


Features

  • Liquid Gel Infusion
  • Built for Comfort: 4 inch of AeroFusion Memory Foam is crafted to fit body's micro pressure points and conform to body's curves and shape for comfort throughout your sleep. Putting the topper on top of the mattress and under the mattress cover will give you a new and softer mattress, extending the life of the mattress and giving you a new sleep experience.
  • Cool & Breathable: Gel Memory Foam enhances temperature regulation and the ventilated holes enhance breathable property that allows heat and humidity normally trapped under covers to be cycled out of the mattress.
  • CertiPUR-US Certified: Our topper is crafted for safety, durability, performance, emissions, and content. Made without harmful substances, our memory foam and fabrics have been independently safety tested to comply with all applicable mandatory and voluntary safety standards for mattress products.
  • Convenient Box Packaging: Your topper arrives compressed, rolled, and neatly packed in a compact boxdesigned for effortless handling and quick setup. Unroll flat and allow 2472 hours for full expansion (varies by model and temperature). A mild, temporary odor may occurairing the room helps remove it quickly.
  • Warranty Included: We stand behind the quality of our sleep products and are committed to ensuring your satisfaction. If your topper arrives with any manufacturing defects, our customer support team is here to help resolve your concerns promptly and professionally.

Description

This gel infusion memory foam mattress topper is designed to offer exceptional comfort and support, while also keeping you cool throughout the night. Made without harmful substances, our memory foam and fabrics have been independently safety tested to comply with all applicable mandatory and voluntary safety standards for mattress products. AeroFusion Memory Foam is crafted to fit body's micro pressure points and conform to body's curves and shape for comfort throughout your sleep. Upgrade Your Sleep Experience Gel infusion regulates temperature, while ventilated holes enhance breathability, cycling out heat and humidity to ensure a cooler, and more comfortable sleep.

Brand: MLILY


Color: Blue


Size: King


Fabric Type: Liquid Gel Infusion


Special Feature: Cooling


Brand Name: MLILY


Age Range Description: Adult


Model Name: EGO-4-TOP-K


Number of Items: 1


Manufacturer: MLILY


UPC: 810123353538


Item Highlight: Cooling Gel Infused, Ventilated Design Bed Topper in a Box, CertiPUR-US Certified, 80"Lx76"W


Unit Count: 1 Count


Number of Packs: 1


Item Type Name: Mattress Topper


Model Number: 4 Inch


Manufacturer Part Number: EGO-4-TOP-K


Manufacturer Warranty Description: 5-Year Limited Warranty


Other Special Features of the Product: Cooling


Closure Type: Pull On


Water Resistance Level: Not Water Resistant


Item Firmness Description: Medium


Fabric Type: Liquid Gel Infusion


Product Care Instructions: Spot Clean Only


Material Type: Memory Foam


Size: King


Item Display Dimensions: 80 x 80 x 76 x 4 inches


Color: Blue


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Sep 12

Yes, absolutely! You may return this product for a full refund within 90 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.

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Top Amazon Reviews

    • Nice, just not for me
I will give it a five because it is very well-made. It didn’t have no smell to it. The problem is with me and my age. It’s probably not the best thing for me. It does help with shoulder and hip pain. But if you sleep on your belly or at least if I sleep on my belly, it sinks in my lower back too much and I end up with lower back pain. It fits really good on my full-size bed. ... show more
Reviewed in the United States on August 13, 2026 by DEBBIE
    • worth every penny
Model: 4 Inch Size: Twin XL
Y'all, I normally don't write reviews, but this mattress topper is amazing. 10/10. It's ready to go right out of the box, so you don't need to wait for it to expand. Also, I'm a college student, so I got this for my dorm; omg, it's a lifesaver. I will literally be in lecture thinking about sleeping on it. It has improved my sleep tremendously. Also, please just get the 4-inch; it feels really nice, and it's memory foam. I'm honestly considering getting one of these for my mattress at home because it's THAT GOOD. Once you lay on it, you won't want to get back up, I swear ... show more
Reviewed in the United States on August 19, 2026 by Mya
    • Great for pregnancy pain
Model: 4 Inch Size: Twin XL
At 7 months pregnant I have a lot of hip and back pain when I sleep, and this has truly allowed me to sleep without severe pain. I only have it on half the queen mattress so my partner can sleep better on the firmer side so I will need to trim it down, but this allowed me to get a much more restful sleep. I have been averaging about 2-4 hours a night for the last month and it has been really hard on me, but last night I was able to sleep almost a full 8 hours. It doesn’t add any heat either so that’s been quite nice. Definitely recommend if you need a softer surface for pain management. ... show more
Reviewed in the United States on July 23, 2026 by Roxanne
    • Great price for the pad, but is too firm for my liking
Model: 4 Inch Size: Queen
I needed something for my old sinking mattress as I can’t afford a new one. I did extensive research before deciding on this foam mattress pad. For reference I got the 4 inch topper in a size Queen. It definitely helps support wise. My only problem was how hard it is! That could be a personal preference thing as lots of people prefer firm beds. Now if you sleep hot, and/or are going through peri, post or are in active menopause dealing with hot flashes, this may not be the best choice as it does retain heat. It comes air sealed, and fluffed up pretty quickly. Honestly for such an affordable foam topper , this is really nice just too hard for my liking. It doesn’t have any type of strap or corner grips. I suggest you order a basic mattress protector/or pad, that way it won’t slip around. It fits perfectly. I ended up getting a soft squishy mattress pad to put on top of the harder memory foam, and now it’s perfect and looks good with the extra height. It seems quite durable but again, does not have pockets just the pad itself. If you prefer firm then this it. It’s still kind of firm, but if you order the 2-3 inch ones they should be a bit softer. If you sleep hot….maybe consider a hybrid mattress topper. Or do what I did-use one hard supportive one like this one, and one cloud like topper for a lil cushy on the tushy ;) ... show more
Reviewed in the United States on June 12, 2026 by Miyeko Yoshimi
    • Don't Buy
Model: 4 Inch Size: Queen
Do not buy. Poor quality and very hot to sleep on. It also hollows out where you lie and makes it very difficult to get out of the hole. I can't even return it as I had already cut up the box for recycling and they want it back in the box. How do you do that? Even if I still had the box. How would you get it to compress & fit back in the box? It was tight in the box when I unpacked it. No way will it go back in. So I suppose I can answer that question....you don't. You are just stuck with it. Save yourself the money and aggravation and look elsewhere. ... show more
Reviewed in the United States on June 28, 2026 by Kip H
    • Great Night’s Sleep in the RV
Model: 4 Inch Size: Queen
I bought this as a topper to add to the RV tabletop bed because it was too hard and had no give. This mattress topper eliminated the hip and shoulder soreness that I had experienced on this bed the last time I used itand I slept a full eight hours on it. It was like a dream! In my own bed at home I usually only get 6 1/2 to 7 hours of sleep, so this worked great! When not using it right now, just put it on top of the other mattress in the RV. Now we really know we’re going to get a good night’s sleep when we go out camping ... show more
Reviewed in the United States on July 29, 2026 by Braden Hancock
    • Great addition to our RV mattress.
Model: 4 Inch Size: Queen
I don't normally write reviews but this topper has been a game changer for us in our RV. RV mattresses are generally thin and uncomfortable. I bought this to try before we went the route of replacing the whole mattress. We have a Murphy bed in our trailer so whatever we use needs to be able to bent to stow the bed away. This memory foam mattress cover is awesome. We have both noticed a difference in our sleep quality since we have started using it. There was a slight odor when we opened the packaging but it disappeared quickly. Only issue is getting out of the bed is a little more difficult because I sink in some as I am scooting to the foot of the bed. Small price to pay for the comfort!! This was a great value for the money!! ... show more
Reviewed in the United States on May 30, 2026 by Daniel J. Wagner
    • Soft
Model: 4 Inch Size: Twin XL
I read a lot of reviews before I bought this. It is nice and soft. I bought others that say they are, but aren't. It filled out in minutes. It did have a slight smell, but it went away quickly. Highly recommend.
Reviewed in the United States on August 23, 2026 by michele.

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