Anatomical Fit: Promotes natural toe splay; Mesh Top: Maximizes breathability and ventilation; Arch Support: Supportive band ensures a secure, stable fit; Lower Leg Protection: Over the Calf height seals out dirt and debris; Total Foot Utilization: Supports full-foot alignment and engagement; Optimized For: Trail Running and Hiking; Fiber Content: 59% COOLMAX EcoMade Polyester, 38% Nylon, 3% LYCRA Spandex; COOLMAX EcoMade fiber contains 100% recycled polyester