adidas Performance Women's Supernova Glide 8 W Running Shoe 100% Textile and synthetic Imported Rubber sole Shaft measures approximately Low-Top" from arch Weight: 9.5 ounces (size 7); 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 Molded synthetic midfoot and heel overlays for stability and support TORSION SYSTEM for midfoot integrity