The Black Diamond Factor ski boot is built for the hardest of hard chargers, who run it wide open on blower pow, send 30-footers to hardpack and pull 60 mph straight lines—skiers with tight pants or skinny skis need not apply. The stiffest freeride boot in the BD line, the Factor, with its Flex-130 rated Triax-Pro Frame™ constructed with 100% Pebax, is the ultimate combination of backcountry and alpine boots. You want a custom fit? You'll get it thanks to the Factor's thermoformable high-performance foot bed and Power Fit Liner. The Factor comes equipped with ISO Alpine DIN blocks and is compatible with BD AT blocks WITH TECH INSERTS (sold separately), which are quickly and easily changed out with a unique sliding, four-screw attachment. Specs: Sizes: 24.0-30.5 Weight: 9lb 2oz (4.13kg) Triax-Pro Frame Technology with Flex 130 Alpine overlap construction Power Fit Liner with Boa closure system Magnesium micro-adjust buckles Mechanically integrated ski/walk mode BD ISO Alpine DIN blocks Backcountry Magazine: "...The overlap design gives the Factor a stiff, consistent flex- laterally and longitudinally - That steers any ski. 'It's the ultimate in-and-out-of-bounds boot,' declared one of our more aggressive testers. 'Great front country boot with a nice flex and incredible walk mode,' gushed another. Testers found the exclusive BD Boa liner closure system provides intimate power transfer from shin to tongue, with better uphill ergonomics and reduced shin rash."