If glacier travel or some winter peak bagging is on the docket, the M-Possible is the ticket. This carbon-lasted, fully rigid mountaineering boot is step-in-crampon-compatible and, thanks
to a layer of insulation, a heat-reflective layer, and a NASA-approved Aerogel footbed, warmer than the inside of a tauntaun. Soft-shell gaiters included. 4 lbs;