Outer Shell is constructed of polyester rib, PWR shell 75D mesh, PWR shell 1000D, PWR|wax 500D, Lorica CE level 1 SEESMART armor at the elbows and shoulders Back pocket is tailor-made to accommodate the SEESOFT CE-level 2 back protector insert Type RV Detachable hydratex G-liner Detachable 2-in-1 thermal liner and membrane Flexisnap collar makes it easy to personalize and adjust the circumference