Synthetics, but soft and pleasant, similar to special. Sports. Sits very well, on my OG 100, OT 80, OB 104 although it fits, but the buns do not bulge-a riddle))) Looks expensive, sewn factory, definitely order in other colors and the daughter also wants. Packed simply in a package and postal, no smell, no bruising. Until I wore and did not wash, then I will add.