deuter SPEED LITE 13 Backpack (Model Number: D3410022) Bag Founded in 1898, this German brand is known as a manufacturer of mountaineering backpacks. It achieves high breathability with its unique back system, "Aircomfort System," which creates space between the back and the pack. It also produces environmentally conscious products, such as using recycled materials. It offers products for various purposes, not only for mountaineering but also for cycling and children. (Quoted) After purchase, I had no opportunity to use it and kept it stored at home unopened. I opened it for inspection and listing. I am listing it as I am decluttering my backpacks. I plan to ship it using either YuYu or RakuRaku Mercari便, fitting within an 80-size package. Please understand that I may fold it slightly depending on the packing situation.