With the Thunder Bay Texapore, you can master any terrain. The Vibram Arctic Grip sole offers the best grip on all surfaces thanks to its thoughtful combination of sole elements made from a proven winter rubber compound for low temperatures and flat, specialized lugs made of rubber and fiberglass, particularly on wet ice and slippery paths. The winter shoe is lined with very warm and soft Primaloft fleece, keeping your feet warm down to -40 °C while on the go. Beneath the grippy nubuck leather of the shoe lies a waterproof, sustainable, and breathable Texapore Ecosphere membrane.