Material: EPS, Head circumference: 50-54 cm, target age: Approximately 2 to 6 years old, Body weight: 249 g Lightweight and cute design: weighs about 249g and does not put a strain on the head. It feels more secure and comfortable. With a cute appearance, it is sure that children will rejoice! Adjustable head size: 50-54 cm convertible, adjustable size to fit your head, suitable for boys and girls. Adjustable children's helmet Keep Cool Breathable: Scientific aerodynamic design, 11 vent holes, effectively reduce the heat inside the helmet. Jaw cushions and linings can be sweated, removed and washed. Ideal for long distance driving and commuting to work! Safeguards: Made of high density, durable EPS material, it absorbs shock from collisions and protects the child's head. Apply to children bicycles, pedalless bicycles, skateboards, kickboards, inline skates, schooling, skiing, roller skates, scooters, outdoor sports and more. Specifications of Drbike Kids Bicycle IQOO Helmet 2-6 Years Old Children Bike Cycling Accessories EPS Bicycle Safety Cap