Getting helmet sizing right starts with a proper head measurement, taken with a soft tape around the largest part of the head, just above the eyebrows and ears. That figure points to a starting size, but it is only a starting point, since head shape varies as much as head size.
Neither format is a universal answer. Weather, speed, journey length and personal comfort all play a part, and many riders end up owning one of each for different trips.
The liner deserves the same care. A removable, washable liner keeps the inside fresh, and
Heroine Racer following the maker's washing instructions protects both the padding and the stitching around it.
Daily wear also plays a part. Sweat, sunscreen and regular use all shorten a helmet's working life, so riders who use a helmet every day should expect to replace it sooner than someone who rides occasionally.
A clean visor is a safety item as much as a comfort one, since scratches and haze scatter light and make it harder to judge distance in low sun or at night. Clean a visor with lukewarm water and a soft cloth, and avoid dry wiping, which is what causes most fine scratches in the first place.
A made to order helmet starts long before any material is cut. Measurements are taken, the intended use of the helmet is discussed, and a rider works with the maker to settle on a shell, lining and finish that suit them specifically, rather than picking from fixed stock sizes.