At just 71 grams, the ultra-light Endorphin is the lightest spike on the market. Its single layer of mesh and FlexFilm delivers lightweight performance, while its 4-pin spike plate maximises traction and power, while being specifically engineered to keep the weight down.Overview?Event: Track & Field?Surface: Track?Upper Details: A single layer of mesh and Flex Film ?Bottom Unit Details: A 4-pin engineered spike plate Specs?Shoe Category: Track?Pronation: Neutral?Cushion: Plush?Construction Type: Neutral?Surface: Track?Arch: High, Normal (Mid)?Water Resistant: No?Waterproof: No?Weight: 2.5 oz. | 71 g