adidas AdiPower Weightlifting Shoes - AW17 PU-Coated Leather Upper - Provides durability through the shoe. Air Mesh and VentFlow Outsole Openings - Help to create a more comfortable and breathable foot climate. Lightweight Injected Polymer - Provides structural strength through the design, specifically engineered for weightlifting. Single Instep Strap - Provides additional rearfoot integrity. Integral Heel Support - 24mm at the heel and 4mm at the forefoot.