This isn 't your typical chest pro. The all-new RockFight CE FLEX is a chest protector built to withstand whatever the elements throw at you. Taking our RockFight base with built in EPP that manages low speed impacts and combining it with a removable, flexible D3O back insert for hard impacts we 've shattered safety standards all while keeping a slim, breathable, lightweight profile. Troy Lee Rockfight CE Flex Chest Protector | Black | Christy Sports