The Alpina Racing Skate boots offer reliable performance, yet are reasonably priced. Previously known as the Alpina RSK, this updated version has a taller and stiffer cuff mated to a new proprietary sole to provide great stability. Compared to elite level boots this has a roomier fit for all day comfort. Power strap offers ankle-support and torsional rigidity, offering your stability while making powerful strides One piece zippered overboot keeps your feet warm and dry through the cruddiest conditions. Strap adjustment modifies the plastic cuff fit, providing a comfortable fit around your lower calf. Thinsulate insulation adds warmth Compatible with NNN, Turnamic, and Prolink bindings Alpina Size Chart EU Sizing