Cobrave Children Cotton Camo Hat Bucket Boonie Hat Sun Hat Fishing Hat cotton 1. Material: 100%cotton. Very breathable and comfortable. 2. Hat circumference 21.6''(55cm), for 4 to 10 years old children. 3. Please measure the head circumference of your kids before ordering. 4. The hat has an adjustable drawstring for fixing and two side snaps. 5. Pure cotton fabric, very comfortable and breathable.