BINGPET BA2042 Bow Tie Crystal Boy Girl Dog Collar Fancy Designer Bling Rhinestone Collars for Dogs, Red M The size is M:10-12 inches,fit the necklace size 9-11 inches. Please double check the sizes before order. It is made from good quality soft velvet. There are several holes in the collar for length adjust. With serveal rows of rhinestone in the center of bow tie. Durable and lovely ,lightwight for pets