Design: Polyester mesh underlay increases breathability Heel Control System ensures heel stability and support Foot Arch Support stabilizer made of TPU provides extra lateral foot stability and arch support In-Shoe Comfort: EVA midsole ensures comfort ENERTURN(R) EVA provides extra cushioning and reactivity Durability & Traction: KPU cage gives stability on multidirectional moves and provides long lasting durability LL40 high quality rubber ensures wear-resistance and traction PUNTOFLEX outsole construction designed to allow the foot to flex correctly and give an excellent elastic return