The 917 takes design references from the original Speed Cat Mid and Future Cat Mid. The outsole and foxing tape wrap up, creating a cylindrical heel shape; the sole design is fairly smooth with grooves rather than lugs; the strap on the Mid provides ankle support; the dip in the back collar line prevents achilles tendon irritation; and the upper pattern is based on a U-throat and T-toe format to further reference the Speed Cat. Named after the Porsche 917, driven by Steve McQueen in the classic 1971 movie 'Le Mans.'