Get free shipping and sales for the La Sportiva Glacier Evo Ice Blue Footwear The next evolution of the Glacier suitable for mountaineering, difficult hiking on rugged terrain, snowfields, and glacier travel. 2.8 mm Idro-Perwanger Roughout leather upper. Vibram XSV rands. Removable EZ Flex tongue with Dri-Lex lining for a highly adjustable and personalized fit. RSS technology allows for maximum ankle flexibility then quickly corrects and re-establishes the center of gravity during sudden movements on steep and rugged terrain, thereby ensuring greater stability. Dri-Lex lining keeps the foot dry with its unique moisture-transport capabilities and breathability. PU aircushion midsole. 8 mm Mountainflex insole with half steel shank. Vibram Ice-New outsole. Weighs 4 lbs. 2 oz. Compatible with semi-automatic crampons.