Combine a dog’s natural drive to chew with a problem-solving challenge and you have the most revolutionary boredom buster of all time – Seamsters! 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 9" x 4" Large measures 11.25" x 5.75" Watch how it works!