This drawstring backpack is made of 210D nylon fabric. It's safety, environmentally friendly ,non-toxic,durable,portability and waterproof. There's a zipper straight ahead so that it is easy to use. There is a headphone jack next to it. It is conveient to listening once your phone put into the bag. It can be widely used as street patting cloth bag, hand-painted DIY, corporate propaganda, student book bag exhibition, company activities, meetings, advertising, publicity products, gifts. Custom logo is welcome.