Feature 1This is a collar with cat teaser, and it can be worn on cats' neck or head, and feather on the teaser will swing along with cats' movement. 2Swing of feather will attract cat and making them chasing and biting feather, so as to exercise cat and improve their physique and intelligence. 3Can be mounted on the top of your shoe and play with your cats, having them chasing you around, which will make them more active and healthy. 4You can also have many cats play with the collar, providing different experience. Playing this toy will ease cat's anxiety and improve their happiness. 5Made of high quality ABS, easy to wear, durable and sturdy, ready for long term use. It also prevent cats from forming a habit of damaging your furniture, cloth, etc.SpecificationItem Type: Cat Teaser CollarMaterial: ABSWeight: 26g/0.9ozProduct Size: Approx. 31x4.9cm/12.2x1.9in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Main Teaser Collar1 xHook and Loop1 x Spring1 x FeatherNotePlease allow 2‑3cm error due to manual measurement. Thanks for your understanding.