100% Cotton Ergonomically designed to support the foot and prevent heel slip Rubber formulations developed specifically for agricultural conditions Pull tab and kick lug for easy on and off Fully clad, UV resistant natural rubber upper 4MM CR-Foam insulation (comfort range of sub zero to 85° F) 100% waterproof hand-laid premium rubber construction. Snake resistant, scent free, full rubber cladding. Ergonomically designed to lock in the foot and prevent heel slip. Removable Quatro Comfort System innersole. Full 4mm CR-foam bootie for insulation fitted with a brushed poly-fleece facing cloth. Anti-clogging, tractor-grip cleat design. Comfort range: -15�to 85� F