How Should a Full Face Helmet Fit?
Using a soft measuring tape, measure around the circumference of your head, across the forehead just above the eyebrows, above the ears and around the back of your head.
According to industry experts, a helmet should be comfortably snug around the entire wearer's head without resulting in pressure points. It shouldn't have any up and down or side to side movements during the ride. It shouldn't be too tight, but it shouldn't be loose either.