Warmth at altitude is key, especially if you like having toes. Not only is the La Sportiva Olympus Mons toasty warm, but easily the lightest boot in its class. La Spotiva accomplishes by using advanced technology and materials, like replacing the traditional rubber sole for a lighter, warmer, polyethelene version. Suprisingly, the lighter materials and triple layers mesh together more cohesively than one would expect, allowing the boot to climb steeper terrain suprising well. The Olympus Mons is essential equipment for the highest environs on earth- just keep an eye on your crampons. (To see video of Don downclimbing steep terrain at 26,000 feet on K2 in a storm, wearing Olympus Mons, WITHOUT CRAMPONS, watch this video below at 3 mins 29 seconds)

Weight: 39.86 oz/1130 gm per pair