Bright, sparkling design - perfect for any young riderHighly ventilated, lightweight injection moulded ABS helmet - ideal for ultimate comfort and safetyCrown comfort padding with heat formed poly/nylon and a breathable mesh insertFour point heat formed synthetic suede harness and lining with added rear lacing - for easy and secure adjustmentsQuick release buttonDurable painted acrylic top with a sanded finishSafety Standards:PAS 015 2011.VG1 01 2012.British Kitemarked to PAS 015 2011.Here are the sizes available and the head circumference in cm for each one:  0.5: 53-54cm1: 54-55cm1.5: 55-56cm2: 56-57cm2.5:57-58cm3: 58-59cm