This is a slip-on dog bandana. The dogs collar will slip through the opening on the top. No outside seams are sewn. *design placement may vary on each bandana* X-Small: 8 in x 7 in - Perfect for pups <15 lbs (Shih Tzu, Yorkie, Cockapoo, and Cats!) Small: 10 in x 7.5 in - Perfect for pups 20-30 lbs (Puggle or Pug, Maltipoo, Boston Terrier…) Medium: 12 in x 8.25 in - Perfect for pups 32-59 lbs (Husky, Smaller Golden Retrievers, Mini Golden Doodle, Brittany Spaniel, Corgi, Beagle, Border Collie…) Large: 13 in x 9 in - Perfect for pups 60-90 lbs (Golden Retriever, Pitbull, Labradors, German Shepherd, Standard Golden Doodle…)