Hi Rachel! Thank you for your interest in the Medline Tri-Panel Abdominal Binder!
To find the correct size, you will need to measure the circumference of the widest part of your abdomen (usually around the waist or hips, depending on where the binder will be worn) using a tape measure.
Once you have that measurement in inches, you can compare it against the following sizing chart:
Small/Medium: Up to 45 inches
Large/X-Large: 46 to 62 inches
2X-Large: 62 to 73 inches
3X-Large: 71 to 82 inches
Thanks,
The Medical Supply Pros Team.