These are the belts we use for the belt lights. They have one accessory strap which is suitable for most applications. They are made of heavy duty nylon webbing with heavy duty buckles. They come in even sizes from 36 to 48 inches. They are measured from the buckle to the middle hole of five holes spaced at 1 inch intervals. We recommend you select a belt size approximately 4 inches greater than waist size to accommodate wearing outside your clothes. Choose your size from the drop down menu.