• PREMIUM PROTECTION: Durable PC shell and impact-absorbing EPS foam provide reliable protection for cycling, skating, and other outdoor activities. • BREATHABLE DESIGN: Six air vents improve airflow to keep kids cool and comfortable. • ALL-DAY COMFORT: Removable padding, a soft chin pad, and a detachable visor provide a secure, comfortable fit. • EASY ADJUSTMENT: The rear dial and quick-release buckle make sizing fast and simple. • SIZE & AGE: Fits head circumferences of 17.7–19.7 inches (45–50 cm). Recommended for ages 2–5; please measure before ordering.