Joe Rocket Atomic 5.0 Men's Textile On-Road Motorcycle Jacket - Black/Orange / Large Combined Waterproof treated Rock Tex and Hitena outer shell for maximum impact resistance Externally accessible C.E. approved armor in shoulders & elbows Removable Spine Armor with Pocket for Optional C.E. Spine Protector Variable Flow ventilation system with waterproof zippers. Cross Linked Ventilation with Wind Tunnel Cooling Patent Pending Full Flex articulated back expansion panels