Subrtex 3" Memory Foam Mattress Topper Gel Infused Mattress Pad, California King

Order if you have somewhere to air out the mattress safely, it comes shrink wrapped and is very odorous upon o pening. It took 4 days of outdoor time to fully remove the smell. With that said, it's an incredibly well made and comfortable mattress! It's thick enough to sink into but hasn't lost any form upon use. I have a twin with overhang on all sides so i ordered the Twin XL - DON'T MAKE MY MISTAKE! the XL won't fit under any twin sheet and it's 100% my fault for thinking extra space would be sufficient.

This gel-infused memory foam mattress topper is well-ventilated for a substance that feels so dense. It regulates body heat quite well. It arrived well-packaged. The topper comes compressed, rolled, and double-bagged. After unboxing it - don't use a sharp blade edge to open the box, obviously - I immediately noticed the topper and a small, sealed plastic pouch containing product documentation and a plastic safety slicer to use in cutting the tape and the inner plastic bag. After discarding the plastic bags, I unfolded and laid the mattress topper flat on the floor. At approximately 67 degrees Fahrenheit, and after re-absorbing air for 48 hours, the topper measured 78.5" long, 38.25" wide, and right at 2" thick. The product documentation indicates that the expansion process is quickest when the temperature is higher, at 78 degrees, for example. Typical of gel-infused memory foam toppers, the lengthwise ends are not square to the sides, but the long sides are straight. The 10-year warranty is limited, but I've never had one fail when used as intended. I recommend and use this type of topper on conventional mattresses and air beds alike.