Warm tips: the rubber bands are disposable. When you reuse it, it gets a little bigger every time. Do not use them again if they lose the rubber bands. And you can choose the appropriate amount once as per your hair thick and tightened frequencies; please keep it away from children under 3 years to avoid choking and swallowing STRONG AND STRETCHY - The elastics are not so thin, they wont break when you try to stretch them, but they are not so thick that you cant stretch them too much. The headband is made of environmentally friendly silicone, tiny and soft, strong hold, but does not pull the hair. FREE ZIPPER POCKET - Includes a zip pocket that is suitable for storing and picking up. Keep the hair bands clean and tidy so they do not get mess Multipurpose: these elastic bands are suitable for all kinds of people, men, women, babies and children, ideal for long or short hair, curls, ponytail, braiding, daily hairstyles, etc., and can also be used for office or industrial purposes Diameter x width: 16 mm x 2 mm, includes 400 elastic rubber bands in several colours, ideal for babys fine hair, enough for your replacement and different needs in daily life NOTE 1. The size of the product is measured manually, and there will be an error of 2-3mm due to factors such as different measurement tools and measurement methods. 2. This product is all taken in kind, but due to differences in photography, lighting, color deviation, and personal understanding of color. As a result, there may be some color difference between the actual product and the photo, and the color is subject to the actual product. 3. Please take good care of our products~ 4. Please confirm the size before purchasing