Generic Blue cell Tactical Head Wear/Boonie Hat Cap For Wargame, Sports, Fishing &Outdoor Activities (Acu Camouflage) 60% Cotton + 40% Poly Imported Two snap buttons help changing to another style hat Four ventilation holes keep the hat ventilate Designed to protect the head from sun and sand Diameter 7 1/2 inner, 13.5 outer (inch)