GOTD Kids Hat Baseball Caps Caps Snapback Girls Boys Toddlers Summer Sun Hats Imported Material: Cotton Machine Wash Suitable for ages in children (Fit 2-7 years old) Head Circumference: 50-55cm/19.6-21.6" (adjustable) NOTE: All the sizes are Asian sizes. Please compare the detail sizes with yours before you buy!!! Use similar clothing to compare with the size.