Adorable 2 reversable Colorful Dog Bandana. This bandana is 2 sided and can be worn both ways. This is an over the collar bandana so collar threads through the bandana. Making it more secure than slip on or snapped collars. XS - For Toy Dogs or Cats. This fits a collar up to 1 inch wide. Approx 4 1/2 inches long. S - For Small Dogs or Large Cats. This fits a collar up to 1 1/2 inch wide. Approx 6 1/2 inches long. M - For Medium Sized Dogs. This fits a collar up to 1 3/4 inches wide. Approx 9 inches long. L- For Large Sized Dogs. This fits a collar up to 2 1/2 inches wide. Approx 10 inches long. XL- For Very Large Dogs. This fits a collar up to 3 inches wide. Approx 11 inches long.