Pinchmark vs Bar Lug Helmet Sizing
Motorcycle helmets sized two ways. Pinchmark = head circumference at brow. Bar lug = head shape (round, intermediate oval, long oval). Both matter for proper fit.
The Chart
| Method | What It Measures | Why It Matters |
|---|---|---|
| Pinchmark (circumference) | Around head 1" above eyebrows | Determines size: S/M/L/XL |
| Bar lug (head shape) | Front-back vs side-side ratio | Determines model: round, intermediate oval, long oval |
Notes
Even with right circumference (S/M/L/XL), wrong head shape = pressure points + helmet shifting. Round head + intermediate-oval helmet = pressure on temples. Intermediate-oval head + long-oval helmet = forehead pressure. Get fitted in person first time, then know your head shape for future online buys.
FAQs
How do I know my head shape?
Look in the mirror from above. Round = nearly equal front-back vs side-side. Intermediate oval (most common) = front-back slightly longer. Long oval = front-back significantly longer. Most US helmets are intermediate oval. European brands often round.
Brand head shape differences?
Shoei = intermediate oval (RF series) or round (RJ). Arai = round to intermediate. Bell = intermediate. AGV = round. HJC and Scorpion = intermediate. Snell certification doesn't dictate shape.
Need this on your store?
Tailor Size Guide ships pre-built size charts for Shopify.