Zero-Drop Platform for the most natural running experience; Roomy Toe Box allows toes to spread naturally and comfortably; Upper is made from a recycled engineered mesh that is breathable and provides a secure, sock-like fit; Minimal ZipFoam midsole offers just enough cushioning to provide comfort and protection; OrthoLite Performance insoles with long-term resilience and anti-microbial properties; Collapsible heel counter allows the shoe to pack flat, making it highly convenient for travel or tossing into a gym bag; Best for Daily Running, Gym and Training; Heel to Toe Drop: 0mm; Stack Height: 14mm; Weight: 6.6 oz (M9)