Continental\" Rubber outsole: provides exceptional grip during multi-directional movements. | Engineered knit: offers support and ventilation | Engineered knit: offers support and ventilation | Knit sock collar: for additional support and lockdown. | LIGHTSTRIKE:A LIGHTWEIGHT AND HIGHLY RESPONSIVE MIDSOLE MATERIAL THAT DELIVERS GREAT CUSHIONING AND COMFORT. | asymmetrical torsion system: allows foot to invert and gives extra support so that foot doesn't evert too far which causes injury.