Adidas Unisex Performance Adizero Lj Track Shoe 100% Synthetic and Textile Imported Rubber sole Heel measures approximately 0.75" Sharkskin outsole for uncompromising grip and reduced weight, allowing for a more aggressive approach into the pit Synthetic leather upper for light weight, breathability and support Synthetic overlay across the toe box to protect and hold foot during takeoff Molded EVA midsole designed for the cushioning needs of long jumpers Microsuede on inside of spike for maximum comfort and increased durability in high-tension areas; Pebax plate designed for the needs of a long jump/pole vault approach and takeoff