Alpina BC 1650L Ski Touring Boot - Women's - Think of the Alpina BC 1650L as an updated version of the venerated Alpina 1550L . In skiers terms, this means unmatched Nordic skiing versatility. Light enough for fast going, Thinsulate? Insulation to keep feet warm, a sole torsionally stiff enough to tackle steeper terrain, all linked to the NNN-BC binding for a tight connection. What is new is the cuff is now hinged, providing tremendous lateral support without restricting forward flex. Alpina BC1650L features: Women's specific last NNN BC Sole is compatible with the NNN BC Auto or Manual Binding Alpitex? is a proprietary waterproof/breathable membrane Thinsulate? Insulation to help keep feet warm Speed Lacing for a quick tie-up Hinged plastic cuff and power strap connects to a plastic heel counter; lateral ankle stability is combined with an easy forward flex Confused about the sizing? Check out our Shoe Sizing Comparison Chart .