La Sportiva Nepal Extreme:
A very popular, full on mountain boot. They are rated B3, thus are fully-automatic crampon compatible, (they fit Grivel’s semi-auto G12 New-Matic very well), with an insulating footbed and Thinsulate lining. These boots are warm, very stiff, grippy and durable. They use a 3mm-thick, one-piece, good quality leather upper and a great heavy duty Vibram outsole.