Notebook Elastic Band is great for keeping notebooks closed in a purse or bag. It can be used as bookmark, a remainder that tells you about the page you left for reading. This band is made from the synthetic fabric that is soft, smooth, and stretchable. It can be stretched up to 140 percent of its original length. Notebook Elastic Band does not degrade in quality or become inferior due to prolonged stretching, moisture, and other degrading factors.