Durable mesh upper ensures optimal ventilation and comfort; FKT Insole has a closed-celled construction to lock water out; Multi-Density Midsole allows you to access two levels of cushioning: soft against the foot and firmer/more responsive against the ground; Roomy Anatomical Toe Box allows toes to spread naturally and comfortably; Vibram Outsole provides unparalleled grip traction and durability from the leaders in technical outsoles; Stack Height: 30mm (heel) // 25mm (forefoot); Heel to Toe Drop: 5mm; Weight: 10.6oz (M9)