Billow Bling Rhinestone Crystal with Tingling Small Bell PU Leather Collar for Small Dogs or Cats (Bell In Randam Style) 5 adjustment holes for adjustment, please compare with below size before confirm order Size XXS: Total length 1.4*28CM, adjustable length 18-24CM Size XS: Total length 1.4*37CM, adjustable length 27-33CM Cute lovely and fashionable style for your little pet dog or cat It will has tingling voice when pet are moving, very nice gift for your pet