Selkirk is rated for adventurous pursuits in extreme cold temperatures. Recommended during moderate levels activity, this technical, lightweight expedition worthy boot has everything you need in a performance winter footwear companion. Features Insulation Level: Removable Comfort-Fit multi-layer inner boot system Waterproof Level: B-Tek Dry Waterproof Breathable For adventurous pursuits in extreme cold temperatures. Arctic Rated cold-comfort is achieved with moderate to high activity and has been proven in the Arctic on our treks across Baffin Island. A powerful waterproof technology, offering high wet protection with increased breathability. This category of waterproofing protects from the elements, while providing lightweight comfort for active lifestyles. Technology Upper Double-strap Velcro for easy fastening and added security Seam-sealed for maximum water protection Nylon locking snow collar with built-in extendable gaiter to protect from the elements Base Snowshoe compatible Arctic Rubber shell to provide lightweight flexibility, cold-resistance and resilience EVA midsole for light-weight insulation and cushioning Polar Rubber outsole for maximized grip and longevity of boot at cold temperatures Icepaw design pads for improved contact-point grip on ice Insulation Removable Comfort-Fit multi-layer inner boot system featuring: Thermaplush soft, next-to-foot wicking layer for warmth Form-fitting B-Tek Foam lining for comfort B-Tek Heat lightweight, 4-channel hollow-fibre insulation for high-loft breathability in a broad range of temperatures Vaporized Aluminum Membrane for energy reflection and heat regulation PolyWool lining for moisture transfer and evaporation outside of fabric Hydromax layering for improved moisture management Diamond Net insulation for wind-resistant protection with a lightweight feel Waffle-comb footbed designed to trap warm air and control odour Specifications Height: 13" External Forefoot Width: 5" External Length: 12.5" Weight of Pair: 6.76 lbs - Based on Men's Size 9 Baffin Men's Selkirk Boot