This drawstring bag is made of polyester and good quality linning, durability, quality and water resistant.It's sturdy and very well made.Our drawstring backpack is very light, you can carry it easily and make you stylish.It doesn't take much space in your carry. The backpack bag is really comfortable to wear with the straps,pockets for various items you can take to the gym.When you travel,goto work or school or go shopping, you can enjoy the happiness with the gym bag.Sturdy roomy with vibrant colors, ideal for travel, shopping, day bag, yoga and school pe bags.Thanksgiving, Halloween,Christmas, Birthday.Just as pe bag for kids,grandchildren,can be used for swimming lessons,the theme parks,day strolls or short walks in the countryside, for trips abroad as cabin luggage