Alltrack 90 Men's Ski Boots Size:24.5 Mondo (cm) tit has incredible heel and W17 tit has incredible heel and ankle hold very resistant and 100% waterproof Full Power Generative Design Grid minimizes boot wall thickness for the most effective use of material to reduce weight and enhance power transfer Better Skiability response and control Optimized Hike Mode The lower boot shell is designed to offer a 50 degree range of motion in walk mode for efficient touring and maximum power for skiing when in ski mode Custom Comfort Custom liners offer internal customization for enhanced comfort and support GRIPWALK® Compatible (sold separately) GRIPWALK® soles feature a rubber tread and rockered toe for a more natural walking motion and increased traction