【Tyvek KNAPSACK (BLUE BIRD)】 A knapsack made from Tyvek® material. Tyvek® is a high-density polyethylene fiber non-woven fabric developed by DuPont in the United States, boasting excellent moisture permeability, waterproof performance, and outstanding strength and durability. It can be used for various purposes such as storing change of clothes during hiking or camping, carrying valuables when depositing luggage, organizing groceries, packing bathing sets for hot springs or baths after mountain climbing, or as an everyday eco-bag or sub-bag. Size: (H)50cm x (W)37cm Material (Body): Tyvek® Material (String): Acrylic Weight: Approx. 48g The knapsack features a design inspired by the "blue bird," a symbol of happiness. The blue bird of happiness carries the meaning that "happiness is close by, and there is happiness that we overlook because it is too close." ⬛︎Caution: Tyvek cannot generally be washed in a washing machine. If it gets dirty, wipe it with a tightly wrung-out cloth and air dry it in a well-ventilated area, out of direct sunlight. *Items other than the knapsack shown in the product image are not included.