We talk head shapes (round, intermediate oval, and long oval) and show you how to measure to get the right size motorcycle helmet. For an accurate head measurement, wrap the measuring tape horizontally around your head about 1" above your eyebrows. Keep the measuring tape comfortably tight in order to achieve the best results. For precise results, measure two or three times. If you get different measurements, take the largest one. Helmets should fit snugly so if your head measurement falls between two different sizes on the helmet sizing chart, choose the smaller helmet size.