The Hawx Ultra XTD boot combines our best alpine and touring technology – and this liner is a big part of that. It has pre-shaped thermoformable heel and ankle areas for a snug anatomical fit and the great foot hold for skiing and is 100% heat moldable and customizable through Memory Fit. A soft flexible zone in the cuff makes touring & walking easy and it's breathable & washable. It’s also unbelievably light – size 26.5 is 150g lighter than a standard Hawx Ultra Platinum liner.