Your pet can show off their Florida Gators school and team spirit too with this brown leather collar. Made of genuine oil-tanned leather, it features 2 silver gun metal concho logos and matching hardware. To assure a safe and comfortable fit for your pet, place two fingers between the neck and the measuring device and note the indicated length. Size Medium is 1-3/8-Inch wide and fits lengths 17-Inch - 21-Inch.Medium Dog Collar measures 17 Inch from the part of the buckle where the leather turns to the first hole and measures 21 Inch to the last whole.This gives a range of 17-21 Inch.