The X PRO performance enhanced with top heating technology for unrivalled comfortWarmthSalomon's exclusive Custom Heat liner delivers consistent, even heat all around the foot for maximum warmth and comfort, up to 18 hoursPerformanceBrand new Twinframe2 design delivers improved rebound and dynamic flex, while oversized pivot provides efficient transmissionFitCombined Custom Shell 360° shell and My CustomFit 3D liner for a totallycustom fit, inside and out. TECHNOLOGIESTwinframe2360° Custom ShellCustom Shell on cuff Custom Heat technologySHELL & CUFFPU cuffPU/PA shellLINERSMy Custom Heat 3D Pro LinerSensitive footprintBUCKLES4 micro alu 3D bucklesADJUSTMENT24mm oversized pivotArticulated sensifitFlex adjusterHeel and toe removable din padsStrap: 45MMFlex Index: 110Last: 100/106Â