Alfie Couture Designer Pet Accessory - Rox Denim Belly Band (for Boy Dogs) The 2015 update improved on sizing and lining design providing better fitting and comfort for your pets. Size Medium fits waist girth (measures in front of the back legs) 18" - 20.5" and 4.25" wide Serve as good training aid and/or anti-breeding aid Prevent dogs from marking their territory when out and about For urine absorption, just add a panty liner or tissue 100% cotton lined with a double layer of diaper flannel. All cotton denim. Machine washable and quick drying XS fits waist girth 12&#034; - 14.5&#034; and 3.75&#034; wide; suitable for dog breed such as Yorkshire Terrier, Chihuahua, Pomeranian Small fits waist girth15&#034; - 17.5&#034; and 4&#034; wide; suitable for dog breed such as Maltese, Miniature Pinscher, Toy Poodle Medium fits waist girth 18&#034; - 20.5&#034; and 4.25&#034; wide; suitable for dog breed such as Jack Russel, Italian Greyhound, Shih Tzu Large fits waist girth 21&#034; - 23.5&#034; and 4.5&#034; wide; suitable for dog breed such as Corgi, Beagle, French Bulldog XL fits waist girth24&#034; - 26.5&#034; and 5&#034; wide; suitable for dog breed such as Cocker Spaniel, Brittany Spaniel, Border Collie, Whippet, Standard Schnauzer