Dartmouth logo with Master of Health Care Delivery Sciene text below it The Pinion Down Vest is the essence of core warmth that’s as comfortable as it is functional. Perfect for shoulder-season temperature swings or layering under a ski shell, the vest features a 100% recycled, lightweight, abrasion-resistant Pertex. Quantum ripstop shell that blocks wind and light precip. Responsibly-sourced, 800-fill HyperDRY™ water-repellent down remains lofted even through mixed conditions. The athletic fit is as comfortable in the backcountry as it is stylish around town, and the highly compressible design means there’s always room in your pack for it.