The Alpina Snowfield is perfect for exploring the backcountry without spending a lot of wearing larger heavier boots, they're perfect for "light backcountry" touring where the need for superior downhill control is overridden by a preference for comfort. The Rottefella NNN-BC III soles and Alpina's medium flexing midsoles combine to give the Snowfield torsional control for turning while allowing for a comfortable forward touring stride. A slightly wider last provides a forgiving wider forefoot. The speed lacing system and anatomical foot bed provide a snug and comfortable fit.Features: Synthetic uppers, Thinsulate insulation, speed lace system, medium flex, Rottefella NNN-BC III sole, compatible with Rottefella NNN-BC bindings. The perfect light touring or beginning backcountry ski boots. Synthetic uppers provide ample support for light backcountry use. Rottefella NNN-BC sole works in all NNN-BC system bindings, manual or automatic. A special, anatomically designed footbed composed of three different materials assures a perfect fit and even distribution of force. Compared to standard boot linings, the Thinsulate insulation system guarantees conditions for the fet that are twice as warm than other boots. The feet can breathe and regulate the natural physical feeling of the foot. Consequently they stay warm even in unusually wet weather conditions. Best Use : Cross Country Skiing.