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