Keep safe and stay comfortable with the Kryptonics Starter Helmet. This children's active wear helmet is the perfect beginner helmet for any sport requiring hard head gear. Let your child roller skate, inline, scoot, bike, and skateboard without a care, knowing they will be protected by the durable, high-impact resistant ABS hard outer shell and full EPS dense foam liner. Plus with 12 vents, active kids will stay cool while being fully protected. The adjustable nylon chin strap with a clip offers easy visibility and access, and is ready to use out of the package. This Large/X-Large sized helmet fits a head circumference of 22-23 in. making it a great choice for most children ages 5-9 years.