To ensure a perfect fit, measure the circumference of your head starting in the middle of your forehead and match it with the sizes below: XS/S 20 – 21.25 in (51 – 54 cm) S/M 21 – 22.5 in (53 – 57 cm) L/XL 22.5 – 23.5 in (57 – 60 cm) Mike Vallely is a true legend who has had enormous influence by always charting his own course, on and off a skateboard. Recently Mike surprised many skaters by choosing to wear a helmet every time he skates, after decades of skating without one. The culture of street skating, which he helped define, largely rejects helmets. After some soul searching, Mike decided it was time for him to make a personal change. Mike V and Triple Eight have collaborated on GET USED TO IT, a project to provide a different perspective on helmets.