These shorts are made of cotton, when I bought mine, it was marked 100% cotton. They all finished in rags ... So it is expensive rags! They shrink in the dryer and I have even one that has cracked after a day of use ... And I'm not obese! Proof with leggings of great brand fashion cheap (which is still 15 2 drawers ...), I can do with 3/4 years ... Now I know I need to put about 15 for 2 shorts if they want to have held at the dryer and time! A wise!