With a full-length side-zip for easy removal or layering, the new Alpha Short is a clutch piece for frigid resort laps, long sled-skiing days, chilly alpine starts, or relaxing at a backcountry hut. Featuring the lightweight, breathable, and quick-drying Polartec Alpha, the active insulation will maintain critical warmth for your knees and legs without bunching at your boots. Wear these shorts under (or over) your shell pants for additional comfort and safety on cold days.