This color (husker) has some polyester and is much more stretchy than the other colors I tried and returned. The fabric is thick too. I bike a lot and have big thighs and these allow a comfy fit that doesn't hug my legs. I've got a pot belly and I don't have to unbutton these when i sit down like other 34" waist jeans. The crotch has adequate room too. liked them so much I bought 3. I'm 6 foot 1 and weigh 190 pounds. I knocked off one star cuz there were a couple "twisted" legs, but nothing serious.