INSULATION: 3-Layer Merino wool blend insulation with wicking air mesh and perforated air trap foam. Castle Cold Shield® Technology: removable insole, wicking wool blend with metallic heat reflecting layer
WATERPROOFING: 1000D nylon upper with Armstrong PU coated leather. Castle DRY-X® waterproof membrane
Reflective elements
Molded high abrasion toe
Castle Quick Connect buckle system
Snow shield gaiter with bungee cord lock
Rubber sole with internal EVA shock comfort chambers
Comfort Rating: -60°F / -51°C
Replacement insoles available