adidas Performance Men's Pureboost ZG M Running Shoe 100% Synthetic Imported Rubber sole Weight: 10 ounces (size 9); Runner type: natural; Midsole drop: 10 mm (heel: 32.5 mm / forefoot: 22.5 mm) boost's energy-returning properties keep every step charged with an endless supply of light, fast energy Two-layer mesh upper has a fading, motion effect as you move SOCKFIT upper for a snug, supportive fit; Stable band construction holds the foot while allowing natural flexibility; High-comfort lining Molded heel counter; Outsole-grade EVA for grip