The Salomon S/Max 100 GW is an awesome option for advanced intermediate to expert level skiers with a narrow medium forefoot and standard calf volume. Coreframe is an insert that enhances overall power transmission and delivers direct energy into the binding and then into your skis. The my Custom Fit 3D Seamless Perf Liner anatomically fits to your foot for lots comfort and can be heat molded to your feet after taking them into a qualified ski shop. Custom Shell HD uses a thinner wall construction for better overall feel and energy transfer into the boot that brings precision when carving. Enhance your comfort and performance on the slopes with the Salomon S/Max 100 GW.