A beach towel is a large, usually rectangular piece of fabric that is designed for use as a blanket or cover-up at the beach. It's typically made from lightweight and absorbent materials such as cotton or microfiber, so it can dry quickly when wet. Beach towels come in various sizes, colors, patterns, and designs, and are often personalized with embroidery or other decorative features. They are an essential item for any beach outing, providing comfort and protection from the sun while relaxing on the sand or swimming in the water.