Recycled engineered mesh upper provides a breathable, lightweight fit; Roomy toe box allows toes to spread naturally and comfortably; OrthoLite performance insoles with long-term resilience and anti-microbial properties; Vibram outsole offer unparalleled grip, traction and durability from the leaders in technical outsoles; Zip Foam midsole compound is springier than EVA and offers more rebound over the life of the shoe; Best for Trail Running, Hiking, Road to Trail; Stack Height: 35mm (heel) / 30mm (forefoot); Heel to Toe Drop: 5mm; Weight: 10.4oz (M9)