So I keep buying these because I like the way they fit. Unfortunately, they are very cheaply made. I never put them in the dryer, but the "string" part, which is elastic, is simply not sturdy enough to hold up even with the most delicate laundering. In fact, I had a pair start to fray the very first time I washed it! I don't know whether these are just being made less well than before (since I've been buying them for a while), or if I got some duds, but I really wish they would use better elastic... or that I could find another manufacturer who makes a similar style with the same fit.