3pcs Pet Washable Cotton Dog Diaper Pet Female Sanitary Pantie Clothes Apparel for Girl Dogs Size S fits waist size 24-40cm/9.4"-15.7"; Size M fits waist size 28-45cm/11" -17.7"; Size L fits waist size 30-50cm/11.8"-19.7" We highly recommend you measure your pet precisely with a flexible tape measure to ensure an accurate fit. We recommend one size up for comfort if your dog's measurement is the higher end of the range listed. These diapers are reusable. They DO NOT INCLUDE the ABSORBENT pads. Place adhesive napkin on inside of garment to adsorb liquids. Washable and reusable. Made of nice soft cotton, very comfortable for daily wear. Eliminates problems from untrained pups, females in season, incontinent dogs and excitable urination. Package incl 3pc of Cotton Dog Diaper Pet Female Pantie:1pc pink, 1pc blue and 1 pc yellow