Micro Helmet Kids' Helmet 52-56cm Safety In Every Activity We cannot stress enough the importance of safety. Please choose the size carefully. Measure your child's head from the forehead, where the helmet will sit, round to the furthest point on the back of the head. - Extra padding for an optimum fit and wearing comfort - Adjustable fastener for a perfect fit.Details • Adjust head size 52-56cm • Rear size selector with integrated light • Fidlock fastening technology for opening and closing without stings • Adjustable side lock separators SKU: AC2129 REFERENCE: 9000078878_3024 Micro Helmet Kids' Helmet 52-56cm