OCP Scorpion NyCo Crye Precision G3 Field ShirtFlame Resistant Operational Camouflage Pattern Scorpion Nylon Cotton Crye Precision G3 Field Shirt Designed for wear underneath body armor, the G4 Combat Shirt is ready to serve those who need a light efficient shirt, as the G4 offers a flame resistant torso, a slim cut with maximum mobility, and low profile zippered shoulder pockets designed to reduce bulkiness while still leaving room for essential gear. In short, the G4 Combat Shirt is a dream come