***For help with sizing in 3 Easy Steps, visit Bellefit website and go to the Choosing and Sizing page. Use the Online Sizing Calculator to receive girdle style (Bellefit comes in 4 styles) recommendations based on your body shape/type as well as your measurements. View the recommended Bundle combinations as well.***Bellefit Childbirth Recovery Girdle with lateral zipper. ***The BEST Postpartum Girdle. Bellefit promotes Abdominal Support, Spinal Realignment, Posture Improvement, Back pain relief, Organ Repositioning. Doctor Recommended.***********Available Sizes:(XS) X-Small: 32.5" - 35"(S) Small: 35.5" - 39.5"(M) Medium: 40" - 43"(L) Large: 43.5" - 47"(XL) X-Large: 47.5" - 52"************For sizing:- Measure around the widest part of your hips and buttocks. **- Go one size up from the recommended size on THE CHART IF you gained more than 33lbs during your pregnancy. KNOW YOUR PRE-PREGNANCY JEAN SIZE. Your pre-pregnancy jean size and your Hip Contour Size are needed to determine your girdle size.*******HIP CONTOUR HELP - Measure your hip contour at its widest point AFTER the 36th week of pregnancy or postpartum. Why? Because your hips will widen after week 36 to prepare you for childbirth. An accurate Hip Contour measurement is necessary for sizing. ****