Lightweight high performance boots for classic style. This model borrows technology from the top-of-the line X-ium series, while retaining enthusiast-friendly comfort and warmth. - For Rottefella NNN and Salomon Prolink bindings - Dual Core structure for light weight, and support and flex in all the right spots - Wintherm membrane protects against external moisture and reflects some of your body heat back to your use - Thermomoldable liner bootie - visit our store in Tammisto or Kuninkoja to have your fresh boots molded