The UL Women’s Short Sleeve Shirt is a really clever design courtesy of Japanese ultralight pioneers Yamatomichi. Created for long days on the trail, it’s made from a polyester fabric called Shadow Rip that’s super-lightweight, breathable and quick-drying. It’s wrinkle-free too, so you can stash it in your rucksack without it getting too creased. What else? The press studs allow for quick opening when on the move, while the collar can be buttoned up to keep the sun off your neck.