Product 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 match your child's head circumference. Well-Ventilated: Toddler helmet with 11 vents ensures optimal airflow. The aerodynamic and ventilation design helps keep children cool in high temperatures, allowing moisture to evaporate and reducing overheating during physical activity. WIDE APPLICATIONS AND IDEAL GIFT: This toddler helmet is suitable for various sports activities, 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, ideal 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.