Recommended Uses: Cycling, Scooter, Climbing, Snowboard, Outdoor, Skateboard Vehicle Service Type: Scooter Inner Material: Expanded Polystyrene Outer Material: Polycarbonate SAFE PROTECTION FOR CHILDREN: The children's helmet is made of a PC shell and thick EPS foam lining for impact resistance and durability to protect your child's head from bumps and abrasions. Adjustable Accessories: Size: 50cm-54cm, Weight: 330g. The lightweight bike helmet for kids features adjustable straps and a rotatable dial, allowing a secure and comfortable fit to your child's head circumference. Well-Ventilated: Toddler helmet with 11 vents ensures optimal airflow. The professional aerodynamic and ventilation design helps keep children cool in high temperatures, allows moisture to evaporate, and reduces elevated body temperature during physical activity. WIDE APPLICATIONS AND IDEAL GIFT: Sports toddler helmets are suitable for various activities to keep your kids safe, including outdoor skating, cycling, snowboarding, and scooter or balance bike riding. It makes a great gift for boys and girls aged 2 to 5 years old for holidays such as Children's Day, Christmas, birthdays, and other special occasions. WHAT YOU GET: The adjustable kids bike helmet is CE compliant, an important safety standard when selecting a helmet for your child.