Giro Spree Toddler Bike Helmet In-mold hardbody with full coverage shell.46 - 50cm 7 upper vents, 5 rear vents, and an in-molded bug net One-Step Fit Technology with self-adjusting fit and LED flashing lights. Fixed webbing position eliminates need for time-consuming Tri-Loc adjustment. Universal Toddler Size: 46-50cm