Engineered mesh upper made of 30% recycled materials provides a comfortable fit and optimal ventilation; Roomy toe box allows toes to spread naturally and comfortably; OrthoLite Performance insoles with long-term resilience and anti-microbial properties; ZipFoam midsole delivers a soft underfoot experience with lightweight response; Stack Height: 40mm (heel) / 35mm (forefoot); Heel to Toe Drop: 5mm; Weight: 9.9 oz (M9); Best for Daily Running, Walking