Alpina Trapper Heat high leather boots with an innovative InTemp heating system, which is located in the upper part above the instep and toes. This prevents the heating fibers from gradually coming out, as is the case with conventional heating insoles. The battery is then cleverly hidden on the top of the shoe under a protective Velcro cover and powers the aforementioned heating lamella in the front of the shoe. From there, the heat then rises throughout the entire shoe. No protruding cables, no batteries that the user can lose or damage while walking in difficult terrain. With the press of a button, you are pleasantly warm in a moment.