The Disney Princess Bike Helmet is the best way to keep your little princess completely safe when she is rollerblading or riding her bike. All children should have an outdoor safety kit to cover their sensitive areas when they are outdoors bike riding or skate boarding. The liner on the inside is fully protected by a very durable hard-plastic shell. This helmet is in full compliance with the U.S. Consumer Product Safety Commission's standards for child riders that are age five or older.