The Atomic Mens Hawx Ultra 110 All Mountain Ski Boots are the part of a line of the lightest alpine boot ever created. Its secret? A whole new way of thinking about ski boot design. For intermediate skiers, the Hawx Ultra draws on Atomics racing and touring expertise to create a boot that combines the best of both lightweight design and full-on power. The designers achieved this thanks to a radical new progressive shell that cuts material and thickness around the boot where its not needed. Then an asymmetric Energy Backbone provides reinforcement in key zones. The result is the best combination of agility, snow-feel and power ever felt in an all-mountain boot. The Hawx Ultra is Atomics lightest alpine ski boot ever and by a long way. In fact, its 25% lighter than any other!