Dear customer, Thank you for choosing our products. If there is any problem with our products, please contact us through the order information. We will be happy to serve you and solve it for you as soon as possible within 12 hours, thank you! Cat Dog Collars with Bells are hand-woven cowhide collars. The material is light and strong, so your pet will not feel oppressed when wearing it. XS code collar length 15-20CM suitable for less than 3 catties S code collar length 20-25CM suitable for 3-7 catties M code collar length 25-30CM suitable for 8-14 catties L code collar length 30-35CM suitable for 15-25 catties XL code collar Length 35-40CM suitable for 26-35 catties There are three sizes of pet bell collars, which can be adjusted to suit each pet. Cat Dog Collars with Bells has four bells, three bells in the front and a small bell in the back. You dont have to worry that the four bells will noisy you and your pet if they are too loud. The four bells are lighter, which is completely suitable for your pet.