Pablo Dots Snap On Dog Bandanas & Face Mask These bandanas uses snaps as the fastner around the neck. This allows the bandana to stay on securely, but still be able to break away safely Additionaly we offer a 2" elastic extender that snaps onto the bandana so it can be used to a larger or loose fit dogs Xl-L = 17" to 19" & can be extended 2 inches more M = 12" to 14.5" & can be extended 2 inches more S = 8" to 9" & can be extended 2 inches more XS = 6.5" to 8.5" & can be extended 2 inches more