All Evoke Orion helmets are individually centimetre sized using the Callisto helmet liner and the corresponding helmet size best suited to your needs : • Small – liners available from 53-55cm • Medium – liners available from 56-58cm • Large – liners available from 59-61cm Orion Liners are also available in different thicknesses should you be between sizes Orion helmet liners are available in Black and Navy to best match your helmet of choice.
