size：  

0.6cm (diameter) *150cm weight: 40g [recommend small dogs, such                                     as mini VIP, Xi Shi, George, Maltese, sausage etc.]
0.8cm (diameter) *150cm weight: 50g [recommend a medium-sized                                    dog, such as Cocker, Corgi and standard VIP etc.]
1 cm (diameter *150cm) weight: 80g [in large dogs, such as Chow,                                       husky, Samoye, golden retriever, Labrador, Alaska, expensive etc.]