Baffin CONTROL MAX | Men's BootCONTROL MAX is rated for adventurous pursuits at extreme cold temperatures. Polar Proven in some of the world's harshest climates, CONTROL MAX is not only technically superior, but also lightweight and flexible. Recommended during moderate levels of activity, CONTROL MAX offers everything you need in a performance winter footwear companion. Insulation Level: Removable Comfort Fit multi layer inner boot system Waterproof Class: B Tek Dry Waterproof