All Evoke Callisto 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 Callisto Liners are also available in different thicknesses should you be between sizes Callisto helmet liners are available in Black, Navy or Metallic Navy to best match your helmet of choice.
