Our bag is made of washable polyester Fabric, a lightweight fabric that is also very strong and can withstand daily wear and tear. Drawstring bags come in a variety of colors. They were bright and colorful and surprisingly well-made. The different colors make it easy to tell their bags apart. Drag the string to close the bag, drawstring design allows you store things quickly and take them in and out easily. String backpack is perfect for sports, gym, yoga, shopping, travel and more; a great sports gift for friends and families.