Design: Recycled polyester upper offer lightweight breathable fit Secure upper construction that locks your foot in In-Shoe Comfort: Highly responsive Helion(TM) HF hyper foam midsole Durability & Traction: A half-length nylon-blend Speedboard(R) for powerful take-offs Six spikes for improved traction and stability Additional Details: Designed for mid distance races 800m - 1500m Weight: 5.5 oz Heel to toe drop 7mm Compliant forefoot stack height - 20 mm. Women's Track & Field Cleats from the On brand.