Yamatomichi Women's UL Short Sleeve Shirt Glacier White Brashland 5PC Queen Bedroom Ashley Homestore. The UL Womens Short Sleeve Shirt is a really clever design courtesy of Japanese ultralight pioneers Yamatomichi. Created for long days on the trail, its made from a polyester fabric called Shadow Rip thats super lightweight, breathable and quick drying. Its 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.