CFX is a rugged but sleek one-piece co-molded phone case. Merc 3 technology combines genuine aerospace grade Carbon fiber with injection molded poly carbonate to create a rigid chassis that resists twisting and bending. Hit (high impact TPU) co-molded top and bottom offer extreme impact protection. Fast tap buttons provide protection as well as quick and easy use of volume and on/off functions. CFX meets military Specification drop-test requirements.Specifications : Merc 3 (material engineered reinforced chassis) engineered composite materials Reinforce a poly carbonate sub-frame to create a chassis that resists twisting and bending. Carbon fiber reinforced - aerospace grade carbon fiber used in merc 3 reinforced chassis design. Hit (high impact TPU) crowns - co-molded elastomeric TPU crown design provides extreme impact protection. Mil-spec Approved - CFX Meets military specifications drop-test requirements. Rapid Fire buttons - integrated buttons protect iPhone 7 controls while providing quick and easy use of volume and on/off functions.