MET's best-selling children's helmet is even better. Inspired by our best trail helmets, the MET Crackerjack Mips helmet offers enhanced coverage, style, fit and comfort and all the features you expect and more. Polycarbonate shell with EPS liner. Extended head coverage for deeper head protection MIPS-Evolve® rotation control system for increased protection against certain impacts Extremely comfortable and secure on the head due to sophisticated internal shape Insect net built into front vents 13 vents, Internal engineered airflow for improved ventilation and comfort MET Safe-T JR Led Fit System with integrated LED light Reflective back sticker for improved visibility Integrated LED light, 3 spot lights, 40 hr. Straps with adjustable bulkhead for individual customization Certification: CE; AS/NZS; US. UN A (cm) 52-57 Weight* (g) 305