Designed to fit wider skis while maximizing walking efficiency, Atomic's Backland XTD 110 boot is a complete ski touring model that will take you anywhere. Featuring a 100 mm medium touring last, this boot is made from Prolite, which uses the thinnest possible profile, then adds reinforcements in key areas to create a lightweight boot with powerful ski performance. Thermoformable memory foam allows total customization of fit, while the shell design improves fit and foot wrap. The breathable, washable, PVC-free Gold Tour 3D lining offers a pre-shaped anatomical zone at the ankle and heel for a precise fit. This medium-soft boot is one of the best ski boots and most versatile models in the Backland series. It offers a natural range of motion with a flex index of 74, allowing the foot to move naturally during your ski touring sessions. A standard full-rubber touring sole makes it compatible with Atomic Shift bindings and all MN, MNC and pin bindings.