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 Amstrong PU coated leather. Castle DRY-X® waterproof membrane.
- Reflective elements
- Molded high abrasion heel
- Castle Speed Lace System with an articulated padded collar
- Rubber sole with internal EVA shock comfort chambers
- Comfort Rating: -60*F / -51*C
- Replacement insoles and laces available