Design & Technology: Lightweight bike helmet designed with kid-specific features to optimize protection for your little riders graduating to balance bikes or first pedal bikes KinetiCore Controlled Crumple Zones absorb the force of both direct and rotational impacts in the event of a crash to re-direct energy away from your child's head for maximum protection Automatic EZ Fit system lets you adjust the fit as your child grows while avoiding hot spots or pressure points Cheek buckle helps minimize any chin-pinching to keep your child happy Deeper temple coverage adds increased protection around the head's most sensitive area Built-in insect netting restricts openings to bugs without compromising ventilation Built 22% lighter than the previous Lazer(R) Nutz MIPS helmet and with less plastics, its reduced carbon footprint design provides top-rated protection without unnecessary weight Less pinches, less tears LED light compatible Fits Head Circumference: 50-56 cm Certified by the Consumer Products Safety Commission (CPSC) for children ages 5 and up Style: BLC2227891136