Light and powerful, La Sportiva's Spectre AT backcountry ski boot is the lightest four-buckle on the market. It also has the greatest range of cuff rotation in its class. Get a full 60° of ankle movement on the tour, plus Vertebra construction that adds support for your rippin' turns downhill. The low-profile Pegasus buckle system allows tiny adjustments for a precise fit. The EZ Flex tongue works together with the EZ Flex Liner so that your inner and outer boots mesh cleanly while you're walking or skinning.