Hello. We always include a product-specific size chart in each listing that is based on your actual waist measurements, which may vary slightly from what you wear in jeans, for example. To measure your natural waist, you're looking for the circumference around your hip pointers, just below your belly button.
Then you can match it up with our size chart for this item:
Thanks again and please get in touch with us at 1-800-783-8326 or email@example.com if you have any questions at all.