adidas Women's Supernova riot w Trail Runner Synthetic Heel measures approximately 0.94 inches" Upper: Ballistic nylong provides extreme durability Midsole: Boost offers endless energy in the mountains and high adaptability on rocky surfaces Outsole: Gator skin allows us to mold the rubber super thin but keeps It bomb proof The Outsole is completely puncture resistant Due to the rip-proof mesh layer between the rubber and boost