The 2017 Bauer Vapor X900 chest & arm protector is the price-point version of the pro-level Vapor 1X. The Fast Strap harness system allows you to quickly, and accurately, adjust the fit, all while providing greater mobility. Free Flex foam is used on the edges of the shoulder floaters for a greater cross-body range of motion. THERMO MAX liner is used on the inside to wick moisture, keeping the unit relatively dry while you're on the ice.