Hand-laid premium ZXT Rubber for durable waterproof scent-free protection - ZXT Rubber is ozone abrasion and tear resistant with added tensile strength - Nylon shank - Polyester lining - Adjustable side gusset for comfortable secure fit - AeroForm ETPU Midsole provides lightweight energy return that withstands the elements and won't pack out - TPU heel clip for enhanced support and stability - Kick-off heel plate allows easy hands-free removal - Oversized X-shank evenly distributes weight underfoot and offers stability for day-long comfort - Burly Delta outsole is lightweight for long hauls offering great traction across various terrain - 3.6 lbs - 30 to 80 F comfort zone