3D molded heel: Cushion inserts with an antislip lining provide comfort and lockdown to prevent hell slippage. Continental rubber outsole for Extraordinary grip. Engineered Mesh Upper for comfort, flexibility and breathability. Different structures are engineered in strategic zones for structure and stability where you need it while still maximizing breathability. RECYCLED MATERIALS PRIME - PRIMEGREEN:END PLASTIC WASTE. | RECYCLED MATERIALS PRIME - PRIME GREEN: Upper contains a minimum of 50% recycled content | full length TPU protection plate: Rock protection and stability.