Joe Rocket Atomic Men's 5.0 Textile Motorcycle Jacket (Hi-Viz, Medium) 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. Fit is just right, with the arms the right length for sport bike riding, as well as upright touring Cross Linked Ventilation with Wind Tunnel Cooling Patent Pending