Someone may have answered this, but I'm too lazy to thumb through the comments. Can anyone tell me how firm this mattress actually is?

It's so funny how one persons medium can be another's firm. I have had the mattress for 4 years and found it to be medium I weigh 180 and it's a bit squishy for me and thus I'm shopping again, worth noting it's.10 inch and on a platform bed. It does stay way cooler than my previous foam but the top which I think is intended to grip the bedding more tends to get worn and dirty super easy so buy a protector for sure.

maximum weight on twin mattress? (8" + 10")?

The 10" Twin XL, says it's suited for up to1000 lbs ... however, 300 lbs as a side sleeper, was not very comfortable. Laying on back or stomach was fine, but not the side.

Does this mattress have fiberglass under its cover?i have been reading reviews on a few other brands on Amazon, and buyers were complaining about tha

It has a fiberglass sock/cover. We have 3 of these mattress and have never removed the sock/cover and have stray fiberglass fibers under the bed as well as poking through the sock/cover—the fibers can easily be seen with a flashlight. We purchased full zippered mattress encasements to contain the fiberglass. It seems to work? So I’d recommend anyone purchasing add the price of the encasement into the cost.

can I use this on an adjustable hospital bed please?

Yes, you may use an adjustable base with this mattress.

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COOL GEL Chill Memory Foam 14-Inch Mattress with Pillow, CertiPUR-US Certified, Mattress in a Box, Twin XL, White

COOL GEL Chill Memory Foam 14-Inch Mattress with Pillow, CertiPUR-US Certified, Mattress in a Box, Twin XL, White

Product ID: 99537411

Details

Brand
COOL GEL
Cover Material
Polyester
Fill Material
Gel Memory
Item Firmness Description
Firm
Item Weight
54 pounds
Number of Layers
3

📦Compressed mattress-in-a-box

❄️14-inch cooling gel layers

🛏️3-layer memory foam support

R20100

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Description

❄️ Sleep Cooler, Support Stronger, Live Better!

STAY CHILL ALL NIGHT - Advanced gel-infused memory foam dissipates heat for a cool, breathable sleep surface.
UNBOX YOUR BEST SLEEP - Roll-packed for effortless delivery and quick expansion—ready to transform your nights in 72 hours.
CERTIFIED PEACE OF MIND - Made in the USA with CertiPUR-US certified, fiberglass-free foam for safe, durable comfort.
MOTION ISOLATION MASTERY - Superior foam layers minimize partner disturbance—ideal for couples and all sleep styles.
PRESSURE POINTS WHAT PRESSURE - Thick 14-inch profile contours perfectly to shoulders, hips, and back, reducing aches and improving rest.

The COOL GEL Chill Memory Foam 14-Inch Mattress combines breathable gel-infused memory foam with a supportive 3-layer design to deliver cooling comfort and pressure relief. CertiPUR-US certified and fiberglass-free, this mattress ships compressed in a box for easy setup and expands fully within 72 hours. Perfect for Twin XL beds, it offers durable, motion-isolating support backed by a 10-year warranty.

Specifications

ASIN	B07BV2LQ9J
Additional Features	Breathable, Pressure Relief
Age Range Description	Adult
Best Sellers Rank	#6,787 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #31 in Mattresses
Brand Name	COOL GEL
Color	White
Construction Type	Foam Construction
Cover Material	Polyester Blend
Customer Reviews	4.4 4.4 out of 5 stars (7,636)
Fill Material	Gel Memory Foam, High Density Foam
Global Trade Identification Number	00849986033875
Included Components	New 2018 Cool Gel Ultimate Gel Memory Foam 14-Inch Mattress with BONUS Pillow, Twin XL
Included Throw Pillow Quantity	1
Item Depth	14 inches
Item Dimensions	80 x 14 x 39 inches
Item Dimensions L x W x Thickness	80"L x 39"W x 14"Th
Item Firmness Description	Firm
Item Length	80 inches
Item Thickness	14 inches
Item Type Name	Memory Foam 14-Inch Mattress with BONUS Pillow / CertiPUR-US Certified / Bed-in-a-Box
Item Weight	54 pounds
Item Width	39 inches
Manufacturer	Classic Brands
Manufacturer Part Number	410168-8020
Manufacturer Warranty Description	10 year warranty.
Material Type	Foam
Mattress Comfort Layer Material	Gel Memory Foam
Mattress Type	Standard Mattress
Model Name	Cool Gel
Model Number	410168-8020
Number of Items	1
Number of Layers	3
Product Benefits	Pressure Relief, Cooler Sleeping Surface, Improves Sleep
Product Care Instructions	Spot Clean Only. A mattress protector is always recommended to protect your mattress from spills or stains. See Manufacturers Care Instructions Tag for further details.
Set Name	14 Inch
Shape	Rectangular
Size	Twin XL
Style Name	14-inch
UPC	849986033875
Unit Count	1 Count
Weight Capacity Maximum	1000 pounds
top-style	Tight Top

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The product exactly matches the description. Very satisfied with my purchase.

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R20100

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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