Design: Single layer mesh upper keeps things light with a contoured fit and enhanced breathability and water drainage Internal cage like construction locks the foot in for additional support and security This product features at least 10% recycled materials by weight, the polyester upper is at least 60% recycled content In-Shoe Comfort: Helion(TM) HF hyper foam midsole converts energy into potent propulsion Traction & Durability: Rubber outsole with strategic heel grip pattern enhances traction during steep downhills and sharp turns Additional Details: Ideal for middle-distance cross-country events Weight: 4.8 oz (212g)