This document discusses buttons used in clothing and their characteristics. It defines buttons as small fasteners that secure two pieces of fabric together. Buttons can be made from various materials like wood, plastic, bone, pearl, and metal. The document lists 18 different types of buttons and includes pictures of metal, pearl, plastic, bamboo and wooden buttons. It also outlines 10 characteristics that a good button should have, such as not losing color, strength or shape after washing, ironing or long term use and being easy to use without breaking or irritating the skin.