Warms towels and dries them. Please don?t give up too soon. They help to ease back pain by providing cushioning in all the right pressure points. It worked I replace them everyday. Im 58 tall Thick 195 pound and all my fat is on my stomach, so dress Im look like 6 months pregnant lol Ill been looking for shapewear that is comfortable, I read every single review here and yes, agree with most of them is super spanx you BETTER GO SIZE DOWN my regular size is large so I went medium and OMG it work, I did on 3 different dresses and as you can see ( left side with the shapewear, right side none in all pictures) big differences, . Returned first pair. Very frustrate. Buen producto. I was missing one out of the 4 also. I dont think Ive racked more than 225 but I guess over time it begins to loosen a bit.