Design & Technology: Lightweight bike helmet designed with kid-specific features to optimize protection for your little riders Automatic EZ Fit system lets you adjust the fit as your child grows 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 Deeper temple coverage adds increased protection around the head's most sensitive area Flatter shape at the back of the helmet lets your child sit up in their seat and soak in the views more comfortably Cheek buckle helps minimize any chin-pinching to keep your child happy Built-in insect netting restricts openings to bugs without compromising ventilation Built 14% lighter than the previous Lazer(R) Pnut MIPS helmet and with less plastics, its reduced carbon footprint design provides top-rated protection without unnecessary weight Head circumference in CM : Unisize 46 - 52 CPSC 1203 COMPLIES WITH U.S. CPSC SAFETY STANDARD FOR BICYCLE HELMETS FOR PERSONS AGE 1 AND OLDER Style: BLC2227891