A down vest is an essential piece for layering. You can easily stash it in your backpack while hiking, but as soon as you stop or the temperature drops, you can pop it on and get instant warmth where you need it most. The Diablo vest not only offers you these properties, but it is also lightweight, being made from responsibly sourced 700 fill down. Pair it with a shell jacket and a fleece midlayer for complete protection from the elements on your hikes.