Waterproofing: They feature a GORE-TEX membrane for durable, breathable waterproofing. Material: The upper is crafted from rich ECCO yak leather or nubuck leather, which is known for being hard-wearing. Comfort: The shoes include a lightweight PHORENE midsole for enhanced shock absorption and all-day comfort. Traction: A rugged rubber outsole provides durability and grip in various weather conditions.