Made from polyester, this backpack is lightweight and durable. Its practical design provides a comfortable carry experience. Unisex design suitable for women and men. for cyclists, hikers, runners, and travelers. It caters to various outdoor sport enthusiasts. The foldable backpack is ideal for outdoor activity. With its waterresistant design and capacity, it helps keep belongings dry during outdoor sports. Staying hydrated is easy with the included water bladder, and you can carry all your necessities without effort. Use scenarios Cycling or city commuting: light and compact, you can wear it comfortably on rides while keeping essentials close at hand and staying hydrated with the builtin water bladder. Hiking or running: durable and waterresistant to protect contents on trails or workouts, with enough capacity to hold your gear and items, and can be folded when not in use. Travel and daily activities: compact enough for day trips or everyday use, folds for easy packing and storage, while providing reliable performance and hydration on the go.