I purchased this about a year ago, but I haven't used it, so I'm putting it up for sale. It's new, unopened, and I've never taken the contents out. I intend to ship it as is without inspection, so please purchase only if you understand and accept this. Quoted from the following website: 【NANO SLING】The NANO SLING allows you to carry it over your shoulder or diagonally across your body when you want to keep your hands free. It's useful as a sub-bag for outings with children, etc. Despite weighing only 23g, it has a capacity of 19L. It uses ripstop nylon, which is nylon woven in a grid pattern. It's a durable material, even at a thickness of only 0.05mm. Because of its thinness, it can be stored in a small storage bag. It's water-repellent, so it can handle sudden rain (it is not waterproof). It can be hand-washed, so you can keep it clean at any time. It's a small, lightweight bag that's so small and light you'll forget you're carrying it. The small storage bag is sewn onto the bag, so you don't have to worry about losing it. Easy-to-store eco-bags often require precise folding to fit into the storage bag, but the NANOBAG can be easily stored. The secret is the thinness of the fabric. It's only 0.05mm, about the same thickness as a hair.