Adidas Performance Men's Supernova Glide 8 M Running Shoe 100% Synthetic Imported Rubber sole Weight: 11 ounces (size 9); Runner type: natural; Midsole drop: 10 mm (heel: 32 mm / forefoot: 22 mm) boost's energy-returning properties keep every step charged with an endless supply of light, fast energy Engineered mesh upper provides maximum breathability Molded synthetic midfoot and heel overlays provide stability and support; TORSION SYSTEM for midfoot integrity Continental Rubber outsole for extraordinary grip in wet and dry conditions