Blue Pet Dog Cat Birthday Holiday Party Hat Headwear Costume Accessory with a White Ball and Lace for Small Medium Dogs Cats Pets Size: the diameter is about 4.7 inch/ 12 cm. The height of the hat is about 6.3 inch/ 16cm. Please measure the size of your dog before placing an order. This is for small and medium dogs. Adorable, cute and sweet. Help to draw more happy attention and win lots of compliments. Great for dogs' birthday party, theme party, fancy dress ball, parade, photo shoot, play date or other events. Bonus Wiz BBQT tape: help to record the growing of your "baby".