After years of research, testing and listening to the telemark community, SCARPA is proud to introduce the most innovative, lightest-weight, and efficient telemark boot ever created. The new TX Pro is the result of SCARPA's long-standing commitment to free-heel skiing. Compatible with both NTN and Tele Tech bindings, these versatile boots are equally at home at the resort and in the backcountry. The TX Pro meets the needs of today's tele skier and sets the new standard for modern telemark ski boots. Size Options : 24.5 - 31 (half sizes) Weight Reference : 1454g; 3lb 6.5oz (1/2 pair size 27) PFAS : PFAS Compliant Liner : Intuition® Pro Flex TK Last : 102mm Outsole : Vibram® EVO LT Shell : Pebax® Rnew® Cuff : Pebax® Rnew® Tongue : Pebax® Forward Lean : 14°+/- 2° Ski/Walk Mode : Speed MLT Binding System : NTN, Telemark Tech Country of Origin : Italy Size Chart All SCARPA ski boots use Mondo sizing. SCARPA ski boots break on the half size, this means that a half size shares the same shell length as the whole size above it but the liners are lasted for each 1/2 size. For example, a 25.5 and 26.0 are the same shell size but the respective liners come pre-molded to the half size. Some skiers may want to downsize up to 1 full Mondo size, depending upon personal preference.