SmartWool Women's Midweight Zip-Neck Top

Smartwool's heaviest line, Midweight, is perfect for forays into alpine environments where temperatures -- and schedules -- fluctuate. Comfortable next to the skin, and offering the world’s most efficient moisture-management system, this line's soft SmartWool fibers keep you cool or warm, depending on whether you’re at the crux of a climb or belaying from the bottom. It also makes a great secondary layer for when temperatures, and hopefully not your climbing partner, make an unexpected drop.