Seamters provide a long-lasting, challenging outlet for a dog's natural drive to chew. Let your dog burn off frustration and anxiety with a toy that's meant to be "destroyed." Made of natural, non-toxic rubber and stitched with thin, knot-free strips of rawhide, these puzzles will provide hours of distraction. Simply restitch with rawhide refills for repeatable fun! They clean teeth and strengthen gums too! **Please note: The Seamsters Bone is not recommended for "aggressive chewers" Sizing Information: Small measures 10" x 4" Large measures 11" x 5.5"