adidas Adipower Weightlifting Shoes PU-coated Leather Upper For durability with air mesh for breathability Lightweight Injected Polymer in structured strength design, engineered for weightlifting Single Instep Strap - For additional rearfoot integrity TORSION SYSTEM - For midfoot integrity Integral Heel Support - for superb, lightweight stability; polymer wedge 24 mm heel, 4 mm forefoot.