Alfie Pet by Petoga Couture - Julie Diaper Dog Sanitary Pantie (for Girl Dogs) Size Large: 17" - 24" waist girth. Measure the waist size before the back legs. Sizing for each dog is unique. We highly recommend you measure your pet precisely with a flexible tape measure to ensure the best fit. Contact us if you have question. We are happy to help. This Julie Pantie helps your pet keep themselves clean while keeping your place clean. Eliminates problems from untrained pups and females in season, incontinent dogs and excitable urination. Place adhesive napkin on inside of garment to adsorb liquids. Washable and reusable. Made of nice soft cotton, very comfortable for daily wear. Try one on your doggie today!