The design itself is brilliant. It has a super broad, float-able brim that covers your child's face, neck and shoulders. The back flap is wide and long, protecting the back of your child's neck and their upper back. It also makes the hat very stroller friendly. Another great feature of this sunhat is the SPF 50 fabric. It is very very lightweight so toddlers and kids who don't normally like to wear hats, are comfortable wearing these. In addition, the child and youth sizes are vented to prevent overheating when children are active in the sun.The fabric also dries in a flash and is stain resistant. Sunday Afternoon hats have a chinstrap which keeps the hat on even when its windy. And for safety the chinstrap has a breakaway clasp that opens should the strap get caught on something while your child is playing. And one of the very best features of this fabulous sunhat that parents love, is the adjustable sizing band at the back of the hat that literally allows your child to wear the hat for years.