Waterproof : Wear-resistant and water-repellent fabric help keep the bag dry without worrying about rainy days. Made of durable Oxford cloth material, it is not easy to be scratched, torn, or leaked, and all items will be well protected. Foldable: The folding backpack can hold daily books, mobile phones, folding umbrellas, shoes, water bottles, daily necessities, tablets, clothing, and other items. Mutliple Storage: Ith roomy compartment and multi-purpose pockets, sports fitness backpacks have enough room to hold and well organize your items. A variety of colors can be chosen. Multy Function: The drawstring sport bag is multy function: suit swimming, walking, yoga, running, and shopping, etc. And people of any age can carry it normally. Adjustable Strap: The shoulder starp is adjustable, whether adults or youth can adjust them to the lenth that suits themselves. Backpack design can free up your hands.