The Flak Jak™ IMS Chest Protector is HRP's top of the line chest protector for roost deflection. It utilizes our IMS (Impact Management System) padding system on the optically clear polycarbonate front and back body panels, with our original Nytrolyte padding and net suspended floating shoulder system. Includes plastic sleeved metal rivets and 1.5" airloc buckles. Our original suspended shoulder system is what everyone wants. Engineered as a cantilever which keeps the plastic shoulder cap off of your shoulder. In the case of an impact, the energy is dispersed across the whole area rather than one spot. This design is featured in our Flak Jak IMS and 1000's. All HRP's chest protectors are designed for roost deflection only.