Joe Rocket Syndicate Men's Leather Hybrid Motorcycle Jacket (Black, Size 52) Combined 1.2mm leather & High Tenacity Nylon Full Flex System precision tailored fusion of High Tenacity Nylon (underarm, chest, back) and articulated elbow expansion panels, drastically augmenting mobility C.E. approved armor at the shoulders and elbows Removable spine pad with pocket for optional C.E. spine protector Variable Flow ventilation system