Enjoy a little role play and see what you can make your partner "fetch". Tail is molded in 100% pure medical-grade silicone, which makes hygienic and very comfy to wear. Ball end will fill your puppy right up and the flared base will keep it in place no matter how hard they wag! Medical-grade silicone is odor-free and can even be boiled. Pop one in and be someone’s special little puppy. These are great fun!