adidas Men's Adizero Boston 6 M Running Shoe 100% Textile Imported Rubber sole Shaft measures approximately Low-Top" from arch Weight: 8.5 ounces (size 9); Runner type: natural; Midsole drop: 10 mm (heel: 29 mm / forefoot: 19 mm) boost is our most responsive cushioning ever: The more energy you give, the more you get Textile upper with engineered mesh forefoot provides comfort and breathability; TORSION SYSTEM for midfoot integrity Wide fit; Soft material for less chafing and fewer blisters Continental Rubber outsole for extraordinary grip in wet and dry conditions