X-ALP ENDURO IV 100% Synthetic and Textile Imported Synthetic sole 1:1 Anatomical Buckle Closure System reduces hot spots and removes pressure from your instep Low cut construction for a light, fast fit and feel Quick drying, highly breathable mesh/synthetic upper delivers comfort and breathability EVA foam run shoe midsole for off the bike cushioning and comfort Carbon rubber lugged outsole for superior traction and durability