Well, it's Lycra only 10% and 90% cotton. So it's cotton !! The brabric is just like my gym pants only tighter get me some iches. I have tried on one time and not for long I will try again in the morning. I like low rise I am 128 lbs 5'2" ordered "small" and it's tight !! If you are not working out and weigh more than me should go with "Medium" or you are taller than me go "Medium" it's barely cover my ankle. If you don't have any curves, no ass, skinny .... this is the one for you. Thinking getting medium instead because of the iching issue. or return...