ADJUSTABLE AND LIGHTWEIGHT: Simple, lightweight and very comfortable. This helmet weighs only 230 grams and features an adjustable retention system to perfectly fit the perimeter of the child's head. SIZE AND COLORS: [XS] 46-53cm/18.11-20.87", suitable for boys and girls from 9 months to 3 years old. Available in four different graphics. DURABLE: This helmet has an expanded protection area to increase safety and durability, as well as a mosquito net on the front and 10 air intakes. Complies with EN 1078 for cycling helmets, skates and skateboards. Not suitable for motorsport. SAFE: The strips are soft and possible to lock in 2 safety points, guaranteeing an optimal fit. We attach two rear reflective stickers to increase visibility on the road. Can also be used on tricycles, and learning bikes. Glue-On construction. CLEANING: The helmet should only be cleaned with running water and a soft cloth. The helmet should be kept out of reach of any heat source (do not leave your helmet inside your car or anywhere else where it is directly or indirectly exposed to solar radiation).