The inner width of the hat is 10.5cm, and the outer width is 19cm. It will be a decoration accessories for your pet. It is made of high quality polyester material. Featuring plaid printing and cartoon ears printing, the pet hat is fashion and attractive. Featuring soft and breathable polyester, this hat is skin friendly and comfortable for your pet to wear. Item Name: Pet Fisherman Hat Material: Polyester Size Details: Inner Width: 10.5cm/4.13" (Approx.) Outer Width: 19cm/7.48" (Approx.) Color: Blue Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Include: 1 x Pet Fisherman Hat