Adult Solid Colors: 52% airlume combed and ringspun cotton, 48% polyester fleece, Heather Athletic : 90% airlume combed and ringspun cotton, 10% polyester fleece, All other Heather colors: 60% airlume combed and ringspun cotton, 40% polyester fleece, Dyed-to-match draw cords, Side-seamed, Ribbed cuffs and waistband