Reviewed by Stuart Reid (Manchester) - 5th Apr, 2017Staff review Breaking boundaries and heights in these winter boots. Extreme adventures need extreme boots. If you find yourself in winter conditions you couldn't ask for more.A tough, robust and light weight boot that can be used for winter climbing as it is crampon compatible too. Almost no flex from the mid sole to offer a huge amount of support and fully waterproof due to the internal membrane. offering protection from heal to toe from the rubber rand and cushioning around the ankle area. Minimal metal lacing points to cut down the chance of getting caught in the ice on your tricky winter climbs. Perfect boot for mountaineering and getting some height.