TLD Rockfight CE Flex Chest Protector - M/L - BlackThis 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 their RockFight base with built in EPP that manages low speed impacts and combining it with a removable, flexible D3O back insert for hard impacts they've shattered safety standards all while keeping a slim, breathable, lightweight profile.