This fun and fashionable Batman tee for dogs will let your four-legged best friend Fly into the spotlight and get him the attention he loves. Size measurements: X-Small measures 5.5" around the neck, 7" along the back, 12" around chest. Small measures 6.5" around the neck, 9" along the back, 15" around chest. Medium measures 8" around the neck, 13" along the back, 19" around chest. Large measures 10" around the neck, 17" along the back, 24" around chest. X-large measures 12" around the neck, 21" along the back, 30" around chest.