Engineered with lightweight, high impact-absorbing ZipMold+ technology EZ-Fit elastic system auto adjusts to the perfect fit every time Soft flip visor to shield sun from little ones&'; eyes Fits head size 47 - 51cm Passes CPSC and EN 1078 safety standards 7 vents for comfortable useSafe, stylish, and designed for a quick and easy fit, the BernA(R)A(R) Tigre Youth Helmet is perfect for toddler riders.