The climb-inspired Clyffe are insulated trainers that offer the same protection as winter boots during cold-weather exploration. They harness a waterproof DryVent(TM) membrane along with 100g Heatseeker(TM) insulation that stays warm, even when damp. There's a climbing zone in the toe for smearing and edging and Vibram(R) Megagrip rubber outsoles that offer the optimal balance of traction and durability. Design: Waterproof upper made with a combination of suede and textile Waterproof DryVent(TM) membrane 100 g Heatseeker(TM) insulation In-Shoe Comfort: Single-density, moulded-EVA midsole Durability & Traction: Rubber wrap in the toe for additional durability and protection Non-marking Vibram(R) Megagrip rubber outsole for an optimal balance of traction and durability Climbing zone in the toe for smearing and edging