Our bow ties measure approx 4”X 2”. There is an elastic loop on the back that allows you to slide your pet’s collar through. Our bandanas range in sizes from small to XL. Small 6-12 lbs Medium 15-30 lbs Large 35-75lbs XL 80lbs + Give or take a few pounds on either end. *Larry is a 25lb Cockapoo and wears a MEDIUM bandana. Feel free to email me if you have any questions.