Aircee FUNS 40L Internal Frame Camping Hiking Travel Daypack Backpack/w Rain Cover Super lightweight, you can fold it into a very small handheld bag when you don't use it. Multifunctional ,you can use for travel, fitness and daily using. Adjustable backpack straps~can be used by a child as well as an adult Durable nylon material, easy to clean~wipe off with damp cloth Capacity about 20L, Weight100g