polyester material : Easily washable, recyclable and durable Sturdy and comfortable adjustable shoulder straps. This bag can hold a pair of shoes, an umbrella, a few books and etc.. A draw cord closures main storage compartments Suitable for Travel, Sports, Gym, Shopping This string backpack is strong enough to withstand the weight of 20 kg. It can last a long time even in the harsh environment. Boys and girls can use it as a gym backpack or a school bookbag. Lightweight and Waterproof - This drawstring bag is lightweight and easy to carry. The fabric is waterproof and all the things inside are protected very well.