The Fjallraven Expedition Latt Hooded Jacket provides a host of technology, making it an essential layering piece in high elevations and deep winter. Beneath a rugged nylon shell, free-fiber synthetic insulation mimics down for heat that can't be beat. The recycled fibers resist moisture but don't lose insulation in wet conditions. If high exertion encourages us to strip layers, an internal pocket doubles as a stow bag. And the elastic-bound hood, cuffs, and hem keep heat sealed in tight during less labor-intensive activities.