Thin, the size is puny and its not super stretchy so if you have more junk in the trunk they might fit tighter. Although I gave it two stars cause the fabric is soft and the inside fleece is soft and not super thick and bulky. So overall not bad just not as good if you wear normally medium in leggings.  Cause these would probably be a size xs. Although they are soft so I would get them and if your bigger like me I just probably wouldnt put them in the dryer.