Operational Camouflage Pattern (OCP), originally codenamed Scorpion W2, is a military pattern adopted by the US Army as their main camouflage pattern on uniforms. The Scorpion Boonie Sun Hat is made in the USA. This pattern is replacing the military ACU and Multicam patterns. 50% Nylon / 50% Cotton Fabric Quarpel treated for water repellency Vat Dyed Infared Treated Military Issue New Sizes Available: 7, 7 1/4, 7 1/2, 7 3/4