SUBRTEX

Subrtex Memory Foam Mattress Topper 4 Inch King Gel-Infused Memory Foam Topper High Density Cooling Bed Topper Pad

199+ bought in the past month

$119.00

About this item

  • 【Ultimate Comfort】- Revive your firm or worn-out mattress! Our budget-friendly mattress topper gives you a soft, dreamy layer of comfort for a fraction of the cost of a replacement
  • 【Soft Memory Foam】- Experience gentle cushioning and immediate relief. The ultra-soft memory foam conforms to your body, easing pressure on shoulders, hips, and back for deeper rest
  • 【Certified Quality Assurance】- Rest assured with top certifications: OEKO-TEX (harm-free materials), CERTIPUR-US (durable, clean foam), and GRS (recycled content). Your safety and our planet matter
  • 【Easy Care】- Our mattress topper is equipped with a removable cover, machine washable for effortless maintenance and lasting freshness
  • 【Here to Help】- We’re here for you. Our responsive team promises quick, satisfying solutions to any issue. Message us anytime—we guarantee a reply within 24 hours
$119.00

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Product details

BrandSUBRTEX
ColorWhite
SizeKing
Fabric Type90% Polyester, 10% Rayon Made from Bamboo
Special FeatureAdjustable

Technical specifications

brandSUBRTEX
colorWhite
sizeKing
fabric_type90% Polyester, 10% Rayon Made from Bamboo
special_featureAdjustable
closure_typeZipper
product_care_instructionsMachine Wash
water_resistance_levelNot Water Resistant
age_range_descriptionAdult
material90% Polyester, 10% Rayon Made from Bamboo
manufacturerSUBRTEX
product_dimensions80 x 76 x 4 inches
item_weight32.2 pounds
best_sellers_rank#124,121 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #225 in Mattresses Toppers
date_first_availableSeptember 6, 2024

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Customer reviews

4.42,116 ratings

Customers say

Customers find the mattress topper comfortable, waking up without aches and pains, and appreciate its quality, with one noting it makes an ordinary mattress extraordinary.

★★★★★

Bed topper

Grace D. GilletteOctober 17, 2025

Ohh, my god. The best sleep I've got in a very long time.Extremely comfortable n extremely easy to set. I would definitely tell somebody to buy this product. Very well-made Read more

★★★★★

So comfy!

Chris L.November 2, 2025

Love this! Makes the futon so much more comfortable when needing to convert it into a bed. Read more

★★★★★

Thank you Subrtex, they listened to me.

HarbkatMarch 26, 2025

Hello, I want you to know that this company Subrtex has been one of the greatest companies I have ever worked with. The item is made very well. Is very plush and comfy. I needed to call the company and talk to them about something. They were so very polite and listened to me. Some people you talk to just say ya ya and don’t listen. The company answered my question and went above and beyond. You will not be disappointed if you purchase from this company. Read more

★★★★☆

What happened to cooler?

Michelle R.April 2, 2020

Ok so for the most part I always expect a bed topper to smell when I first get them. I wait a few days before placing in same room and on my mattress. This one still smells even after a week of being opened. I wish it didn't smell which makes me want to take it off my bed daily. I'm sensitive to smells so this doesn't make me too happy. On the other side it is comfortable. Soft and seems like it is preventing new skin breakdown on my body. I'm still not sure about the cooling feature they say this one has. I sleep extremely hot so this doesn't seem any cooler to me than the mattress by it self. It has helped over all so I would purchase again. Because before I got this I was noticing sore spots from my mattress and turning on my side was just painful. Note I am able to lay on my bed feeling like I'm on a soft cloud and it has helped the pain a little. I can once again sleep on my side or how ever I wish too. I was very surprised with everything going on that it came very quickly. Thank-You Gave it four stars because I really wanted a cooler mattress topper and this still has me sleeping warm. On a note. I was bed surfing with this mattress. Oh that isn't funny. The mattress wouldn't stay on the bed at all by morning me and the topper were almost on the bed for weeks. My care prover was worried about the major movement of the topper off of the bed so she purchased a mattress protector that was a zipped one around the whole mattress. We put both into the mattress cover and fixed my bed surfing. This is a couple years now and I still like this topper and have fixed the mattress topper from moving off of my regular mattress. their both in the zippered mattress cover. Yes they both fit. Make sure you get a good quality of mattress protector that is up to 18" of stretch for the sides etc. Hope this helps those of you who have had topper go off of the bed., Take Care M Read more

★★★★★

mattress topper

Steve HoffmanSeptember 15, 2025

wonderful mattress topper, so cool and soft....perfect size for our king bed. Read more

★★★★★

Sleep changer.

Rob HansonMay 13, 2025

Great bed topper I got the 4 inch and probably could have gotten the 3 inch but it will support you in all the right places no matter what how you sleep I haven’t slept this good in a long time and wake up feeling rested and not hurting. Read more

★★★★★

My body thanks me!

bearsandharleysApril 22, 2021

Great product! Just spent my first night on it and all I can say is my body is much happier. I put this on top of my existing pillow top, "firm" mattress. I guess I can't handle firm anymore as I would wake up stiff/sore and I could tell the pressure spots on my body. Anyway, after the first night I woke up with zero pain. No tossing and turning from pressure points, no stiffness after sleeping. Well worth it. Like some have said, The topper does have a chemical smell, kinda reminds me of a permanent marker/dry erase marker. Im sure it would go away faster if you let it sit and air out a day but, I didn't want to wait. It fluffed right up out of the packaging. You cans see in the photo, I took that 30 min after I put it on the bed. Read more

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★☆☆☆☆

I WAS CHEATED! DON'T WASTE YOUR MONEY WITH THIS COMPANY OR THIS PRODUCT!!!

KJDMarch 26, 2023

The product did not expand sufficiently after 3 days. At no spot does it rise to 4". It does get to 3 inches in a some places. At the folded part, a lump remains. I am a female Vietnam Era veteran with 11 years in service and a total VA disability rating. I live alone and haven't the strength, the assistance, or the know how to fold it back up, much less put this back in a box and return it. I'd had another brand, in a twin size, for my departed mother which was far superior, but unavailable in full size. This one looked comparable, but it is not. This does not look like the one in the photo which is a bright blue...this one is white with a light blue tint. I'm stuck with this behemouth. It doesn't even fit in a garbage can :( To return it for a refund the morons keep telling me to put it in a box...it won't fit in a box anymore! These people are so SCREWED UP. I tell them over and over again that it won't fit in a box..."Put it in any box." "IT WON'T FIT IN A FRIGGING BOX, YOU MORONS! Read more

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