This depends mostly on the needs of your body. The usual belts that you get are for the pelvis, the belly, and the waist. Some girdles have them as joined together, so you have to use them all at once, but some of the other items have them as three separate bands. If you have problems in all body areas, then use all of the bands overlapping them to give you full support. If you only have issues in one or two section of the body, then just use those particular bands. Some women commented about a lack of instructions. It this happens to you, just look back at the picture on the website or here at our pictures to see how the models wore the products for advertising. It will give you a general idea of how they should be worn.