From technical descents in the Alps to glacier basecamps in Alaska, the Black Diamond Prime combines all-day comfort with technical performance, making it ideal for climbing and skiing the world's most iconic lines. The prime's completely redesigned at liner has a new last and construction, taped seams and articulating zones provide increased warmth and all-day comfort. Pivoting cuff technology provides 40 degrees of resistance-free touring motion, and the boot's rockered rubber outsole lends dramatic grip on rocky scrambles or technical approaches.

• Triax pivot frame with flex 110
• 40 degree of resistance-free touring motion
• Locking Quick wire Buckles
• New plastic liner tongue for a smooth, evenly distributed flex with a wide power strap
• 103 mm v-shaped last with performance, out-of-box fit, 100% thermoformable

Triax pivot frame with flex 110Great Lakes MP