Perfect size for carrying books, clothes, umbrellas and shoes. Can be used for sports, cycling, travel, swimming backpack, basketball bag, clothes storage and so on The shoulder strap is widened to reduce shoulder strain and fatigue even if you carry it for a long time High density polyester fabric has excellent abrasion and tear resistance The drawstring pocket opening design can be pulled on both ends to tighten tightly without knotting for easy storage Equipped with reflective strips to increase visibility at night or in low light conditions