Koflach Mens Degre Alpine Mountaineering Boots

. . . Dual density polyurethane Y technology soft plastic uppers retain their supple flex even in sub zero temperatures, while the lowers utilizes a stiffer plastic to ensure a steady platform. Shank is less rigid than the Koflach Arctis Expe, but still stiff enough for technical terrain and use with rigid crampons. Slight flex that is built into the shell, combined with the sole's rocker, allows for greater walking comfort. A layer of synthetic cork is used in the shell's sole for additional insulation and shock absorbency EVA heel plug further helps to dissipate shock. Special Vibram winter climbing configuration for improved performance in snow. Fully lace removable inner boot made from both open and closed cell foam to maximize insulation while blocking out moisture accommodates all foot volumes and shapes. Inner boot features thermo formable heel and ankle padding adapted from Atomic's alpine ski boots and high loft fleece to allow for a better performance fit, reduced heel lift, and increased comfort. Inner boot can be worn inside a tent or within a sleeping bag in expedition conditions. Please note: Sizes listed above are UK sizing UK 8 US 9 please refer to Size Chart for US size conversion. Men's sizing Men's UK 8 Women's US 10.