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The Skytour AscentShell Bibs are versatile, lightweight, and waterproof, perfect for backcountry touring, ski mountaineering, and other high-aerobic activities in cold weather. Constructed with AscentShell™ technology, an electrospun membrane that is waterproof and windproof while still air-permeable and stretchy, the Skytour AscentShell™ Bibs are supremely lightweight and breathable. Zippered outer thigh vents provide superior ventilation as adjustable suspenders fine-tune the fit. Convenient storage in a top entry upper bib pocket keeps essentials close, and a full center front zip allows you to dump heat when working hard in the skin track. The Skytour AscentShell™ Bibs are the perfect gear for those who want the best of both worlds - the breathability of a softshell with the waterproof protection of a hard shell.