Baby Banz has done away with the need for a chin strap and replaced it with an adjustable band, built inside the circumference of the hat that can be loosened or tightened as required. The hats are especially designed for Babies between the ages of 0 and 2 or kids age 2-7yrs. The hat has a broad brim to keep the sun off the child's face and offers excellent overall sun protection. 100% cotton.