Strider - Rally Helmet manufactured by Bell for Safe Riding, Small "STYLISH AND CUSTOM FIT: Produced by Bell Helmets, this helmet provides an ErgoDial fit system to provide your little one with a custom fit. Our small fits head sizes of 19 - 21 inches or our large fits head sizes of 21 - 23 inches, both geared towards children 2 - 5 years in age. EASY TO ADJUST: This model is designed with a no pinch ratchet buckle for a snug, secure fit. KEEP IT COOL: With 15 air vents, your little rider can stay calm, cool, and safe during their next adventure on their Strider Balance Bike. OFFERS SUN PROTECTION: Features a snap-in visor to help shield the sun glare or rain. JOIN THE STRIDER FAMILY: Strider offers a sense of community that has transformed the experience of learning to ride a bike free of the fear of falling and the frustrating option of learning how to operate pedals. Strider hosts events such as Camps, Adventure Zones, and the Strider Cup."