Created with Japan’s Taion, the Inner Down Vest is a lightweight, low-profile body warmer insulated with 800 fill down. This means that it’s got great warmth-to-weight ratio—and whilst it barely tips the scales, it’ll keep your torso nice and toasty—perfect for throwing over a hoody or a shirt when you need a bit of extra reinforcement against the cold. What else? Well, you can wash it at home, and because it’s packable it won’t take up loads of space in your backpack when you’re not wearing it.