To find the right size you will need a tape measure and the pants you are going to wear the belt on. Button your trousers and measure the distance to the belt's position from edge to edge. Then multiply by two and add plus 15 points.
Belt sizing instructions can be found within each product by clicking on the SIZE GUIDE icon found under the available colors.
Belt size is considered the distance from the center hole to the end of the belt, not counting the buckle.