Premium protection for your head the cube hpc helmet makes use of high tech carbon reinforcement and our bluecore impact protection system to help keep you safe and with 20 large vents to maximise air circulation theres no danger of over heating use your head wear a cube helmet carbon reinforcement bluecore impact protection system 20 large ventilation openings maximum air circulation height adjustable and removable visor height adaptable fit system magnetic fidlock buckle removable and