With a full-grain waterproof leather upper and premium insulation technology, the men's Runyon Chelsea Boot by UGG is perfect for any adventure you may endure. The Runyon is designed as a slip-on boot with a back pull tab for easy on and off. The elastic gore panels at the sides allow for total comfort and flexibility all-day. The inner of this men's UGG boot is lined with Thinsulate technology and UGGpure wool for maximum warmth. The White Spider Rubber outsole delivers increased traction, durability, and comfort.