Ethylene Vinyl Acetate sole Internal arch band wraps the foot for a secure fit. 3/4-length bootie reduces layers and weight. Updated plate design provides optimal traction and transition. Synthetic overlays throughout the midfoot and heel increase durability. EVA sockliner conforms to the shape of your foot for comfort and underfoot support. Updated to be even lighter with a snug fit and smooth transition, Unisex Nike Zoom Rival S 9 Track Spike is designed with the sprinter in mind for events ranging from 60m to 400m, including hurdle events and the long jump.