Certified for scooting, cycling and skating (EN1078 Safety Standard) Adjustable and removable spin dial ensures a snug, comfortable fit Extra padding for comfort and safety These helmets are specially designed by Micro Scooters to give you all the safety features your child will need in a fun, cool design. This helmet has styrofoam padding and a nylon web strap for a snug fit. This is a medium helmet that fits children with a head circumference of 53-58cm. Please choose the size carefully and measure the full circumference of your child's head (about an inch above their eyebrows).