You'll never forget to use this helmet: it gives you all the safety features your child will need. It's made from tough ABS plastic and has a lightweight inner shell, which is padded. 11 vents keep the head cool while the adjustable strap has a quick release buckle. This is a small helmet that fits 48-52cm. Please choose the size carefully and measure the full circumference of your child's head (about an inch above their eyebrows).