Wrap a soft tape level around your head.
Keep it just above the eyebrows and ears. This is the same place a helmet should sit, so it gives the most useful starting point.
Measure the widest part of your head, level and just above the eyebrows and ears. Then use the form below to match the shell family, liner size, and compatible styles without getting led in circles.
Keep it just above the eyebrows and ears. This is the same place a helmet should sit, so it gives the most useful starting point.
If you are between sizes, the form will show the most suitable shell family and the liner colour that should feel right first.
The helmet should sit snug, level, and stable without tipping back or twisting. If you are near a crossover, the Fit Kit can help fine-tune the result.
Mini Lifer
Best for the smallest heads and the first sizing step before the Lifer range opens up.
Lifer family
The core family for most riders, with Retro Lifer, Visor, Brim, and Retro Lifer E-Helmet compatibility.
Mega Lifer
The larger shell family for riders who need more room without forcing a smaller shell to do the wrong job.
Interactive size finder
The finder calculates the primary shell family, shows the correct liner colour, and highlights the styles that match that shell so the next click is obvious.
Your result
Enter a valid measurement above and press Find my size. The page will show the primary shell, liner colour, crossover guidance, and the matching product families.
Current colour counts
Counts come from published, purchasable, in-stock products in WooCommerce. They are cached for performance and refreshed when product stock or category data changes.
Mini Lifer
13 current colours
Shop this categoryLifer
54 current colours
Shop this categoryMega Lifer
11 current colours
Shop this categoryRetro Lifer
6 current colours
Shop this categoryLifer Visor
7 current colours
Shop this categoryLifer Brim
5 current colours
Shop this categoryRetro Lifer E-Helmet
6 current colours
Shop this categoryIf the result lands close to a crossover, pick the primary shell shown first and use the S1 Fit Kit if you want to fine-tune the feeling before you commit.
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