The drawstring backpack is made of high-density oxford cloth, which can be waterproof, wear resistant, tear-resistant, and reusable. The size of the draw string back sack is 13x15.3 inches, large capacity for books, towels, cloth, mugs, umbrellas, etc. Enough to accommodate most of your sports equipment or daily essentials.The string sackpack has a zipper pocket design on the outside for storing small items such as keys, tissues, cell phones, etc. Which can perfectly sort your items. suitable for concerts, gym, yoga, dance, travel, swimming, camping, hiking, team work, training and so on! Can be customized with a silkscreen or heat transfer imprint of your corporate logo.