Helikon Baseball Cap Olive Drab poly-cotton Comfortable, durable & lightweight One size fits most. Hook-and-loop size adjuster for better fit Perforated air holes to keep head cool. Soft under visor material Soft hook-and-loop panels on front, top, back and closure strap. Embroidered Helikon logo on front hook-and-loop panel Material: 60% Cotton, 40% Polyester Ripstop