The Serola SI Belt Extender adds an additional 8 inches to the length of the Serola Sacroiliac Belt, which makes it the perfect solution for anyone that currently owns a Serola Belt and has grown out of their current belt, or for new customers that are in between sizes and aren’t sure which size to get. The Serola Belt Extender is also the perfect solution for pregnant women to extend the size of their Serola Belt as their belly grows during the later stages of pregnancy.