DETAILS & SPECS FXR�s Warmest Boot, Extremely comfortable for endless miles of trail riding Rated to -75degree C with 1200g insulation Molded inner heel flex insert for backward flex control and impact support Slip-on removable liner with micro fur lining Minimal seams in sled-contact areas Heavy duty 2mm genuine rubber reinforcements Front & rear pant cuff attachment system LACE SYSTEM CORE Single anti-slip lace with molded lace sliders for easy tie & go use