Limar 224 youth helmet ribble are proud to be limars exclusive uk online partner a perfect helmet for toddlers up to the age of 3 years old the 224 youth helmet has all the same features and protection as the larger sized limar helmets designed and tested in italy features technology monoshell in mould superlight technology 9 air vents sizing system competition fit system antibacterial pads sizing one size 46 52cm head circumference weight only 240g