Outdoor Research Pub Cap Shell: Face: 43% Wool, 38% Polyester, 19% Nylon; Back: 100% Polyester; Earband: 50% Nylon, 43% Polyester, 7% Elastane Imported Breathable; Fold-Down Ear Flaps Wicking; Fold-Down Ear Flaps Wicking TransAction Headband