H.S. Trask - Temecula (Chili Bison) - Men's: Full grain Bison leather uppers with soft nappa linings. Genuine handsewn moccasin construction. Full length padded leather socks with EVA heel cup for additional cushioning. Leather midsoles with gel pak insert in forepart for additional comfort and flexibility. Vibram gumlite outsole compound. ABS shank and tuckboard system. Airport friendly