Scarpa F1 LT Men’s Ski Boots. For high-mileage missions, ambitious traverses and technical ski mountaineering descents, the men’s Scarpa F1 LT alpine touring ski boots blend race-inspired details with versatile backcountry design. Carbon Grilamid® LFT shells and cuffs deliver an excellent power-to-weight ratio; special grid design increases cuff stiffness for added power transmission. 3D Lambda Torsion frames increases rigidity and lateral stability for excellent downhill performance with minimal weight. Intuition® Cross Fit Tour LT liners can be heat molded for a custom fit. Speed Lock LT ski walk mechanism is strong, precise and easy to use; offers 3 different forward adjust inclined positions; clean design reduces accumulation of snow and ice. Walk mode with 72° range of motion provides optimal touring efficiency. Boa® Fit System upper quick closure strap makes for a fast and secure fit. Waterproof gaiter system provides total snow protection. New bootboard zeppa insoles between shell and liner provide a comfortable fit and feel, and they provide a 3.5° ramp angle. Vibram® UFO RS rubber soles offer maximum grip on any terrain; smooth rubber in the toe areas improves hold on the bindings. Embedded RECCO® reflector enhances radio signals from search-and-rescue RECCO detectors, helping speed up the search for a buried avalanche victim or lost individual. Closure Type : Buckle, BOA, Strap. Best Use : All Mountain Skiing. Weight : 4lbs 5.8oz. Material : Plastic, Composite, Foam. # of Buckles : 1.