Extra Small (XS) - Puppies, Toy Breeds - waist: 6 in. to 13 in. (15 cm to 33 cm)
Small (S) - Pekingese, Shih Tzu or similar sized breeds - waist: 12 in. to 19 in. (30 cm to 48 cm)
Medium (M) - Cocker Spaniel, Schauzer or similar sized breeds - waist: 18 in. to 25 in. (45 cm to 63 cm)
This item is specially designed for the hygiene of dogs. This product is not a toy, and is not intended for pregnancy prevention. Keep out of reach of children and animals.