Tested at both the North and South Poles, IMPACT performs flawlessly under the most demanding conditions. IMPACT is appropriate for extended periods of time in extreme cold weather, snow, and/or ice-covered environments, where activity level may be low to moderate. Boasting the most comprehensive inner boot system, IMPACT features the highest level of cold comfort in the Baffin range. Polar Proven and B-Tek Dry Waterproof rated.