Reebok CrossFit Nano U-Form Shoe - Men's Leather Built with Crossfitters In Mind - Built by crossfitters to give all the important little details needed. Low Profile - Low profile Sole for a low ground feel. IMEVA Footbed - IMEVA Midsole gives added cushioning and comfort for the wearer. 360 degrees PU Cast - For lightweight, seamless, engineered support and durability. ETC Anti-Friction Lining - Reduces abrasion and heat build up with breathable air mesh.