Quadrant Ski Boot

Equal parts downhill crusher and lightweight hiking machine, the Black Diamond Quadrant is for those who want stiff, responsive flex and touring flexibility, and aren't willing to sacrifice either. For Winter 2012/13, the boot's new Efficient Fit AT Liner features improved fit and articulating zones for all-day warmth and touring comfort. The Quadrant's lightweight design and 40 degrees of resistance-free touring touring motion take the grind out of the skin track, and its 4-buckle, overlap shell and redesigned plastic liner tongue allows for maximum power transmission when it's time to drop in.

• Lightweight (1.72 kg [3 lb 13 oz] each) alpine touring boot with 4 buckles and maximum stiffness
• Triax Pivot Frame with Flex 120, 40 degrees of resistance-free touring motion and locking QuickWire cuff buckles
• New plastic liner tongue for a smooth, evenly distributed flex, plus an improved power strap
• New Efficient Fit AT Liner with 1:1 Boa closure system, improved fit and articulating zones for ultimate, all-day, long-lasting touring comfort
• Rockered, rubber outsole with integrated tech inserts provides dramatic grip and durability
• 103 mm V-shaped last.