The Baffin Apex is tested at both the North and South Poles, APEX performs flawlessly under the most demanding conditions. APEX 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, APEX features the highest level of cold comfort in the Baffin range. Insulation Level: Removable Comfort-Fit multi-layer inner boot system Waterproof Level: B-Tek Dry Waterproof Base Snowshoe compatible Technology Upper: Speed lace front fastening system Full length tongue and pull loop at the back for ease of entry Stylish, two-tones leather upper Base: Arctic Rubber shell to provide lightweight flexibility, cold resistance and resilience EVA midsole for lightweight insulation and cushioning Polar R