Alpinestars SP-1 One Piece Suit Packed with MotoGP derived technology, the 2011 Alpinestars SP-1 race suit offers the sports motorcycle rider and track day enthusiast exceptional levels of protection, comfort and performance in a sleek, modern design. Dual density back hump for improved aerodynamic and cooling performance 1.3mm premium full-grain leather for excellent abrasion resistance. Removable/adjustable CE certified GP elbow and shoulder protectors with injection molded shell and dual density foam padding. Removable/adjustable CE certified GP-R knee and shin protectors. External PU shoulder sliders provide extra impact protection and help prevent pitching the rider into a tumble when sliding along the ground. Snap connection system allows integration with the CE level 2 certified Bionic Race Back protector which is available as an optional accessory