Mountain bike styling with the ease and comfort of onestep fit technology the giro rascal helmet includes some of the same features found in our best adult helmets with one exceptional difference the self adjusting onestep system onestep is the easiest way to fit a child39s helmet quickly and securely without any hassles or fuss other features include integrated rear led taillights for added visibility and a special pinch free buckle it39s a cool helmet with loads of gre