When we introduced the world's first high-performance winter boot with a built-in heating system last season, it sold out in a (hot) flash. Here's the newest model, back for more winter butt-kicking with a slightly higher cut for even more protection from the cold. Built with Columbia's most advanced technical winter boot tooling-with a waterproof-breathable upper and a Techlite(R) footbed and midsole-the Thermo features built-in rechargeable batteries and electronic controls that provide three temperature settings for maximum protection from the cold.On the low setting, heating pads located under the ball of the foot deliver warmth for 8 hours; on high, expect 3 hours of heat where your foot needs it most. With a lightweight waterproof thermal rubber shell and rustproof alloy gaiters, the Bugaboot Thermo is ready for serious mountain trekking, snowmobiling, ski lift operation, or Arctic exploration. Combine these features with Bugaboot's trusted durability, 200g Thinsulate(R) insulation and Omni-Grip(R) traction, and you may very well have the greatest winter boot to walk the earth.