Description of Dalbello Krypton Pro Ski Boots '09 The top model in the Krypton Series, the Krypton Pro has been developed for top level, aggressive and accomplished expert freeride skiers and competitors seeking a close and precise fit with powerful and responsive energy transfer. Interchangeable tongues & footboards make this the most versatile and adjustable Krypton model. Features: 2 Interchangeable Footboards – Firm & Anti-Shock 2 Interchangeable Tongues – Stiff & Medium Flex Twin Canting Forward Flex Control Forward Lean Control F-100 Alu Buckles – 3 Microadjustable Power Cuff Dynalink + DC Cable Closure Kinetic Response Tongue Cabrio Design: D-62 P.U. Shell/Cuff Reduced Volume Fit High Density Ulteva Foam A.C. Adaptive Comfort Toebox Lycra/Mesh EZ Slide In Heat System Ready Construction Orthofit Performance Insole