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2. ASCERTAINING THE RIGHT HELMET SIZE
The S1 PRO is available in six double helmet sizes. Refer to the
following list for the helmet size that fi ts you:
Head size
in cm
SCHUBERTH
helmet sizes
Alpha
helmet sizes
52 to 53 52 / 53 XS
54 to 55 54 / 55 S
56 to 57 56 / 57 M
58 to 59 58 / 59 L
60 to 61 60 / 61 XL
62 to 63 62 / 63 XXL
If your measured head size (e.g. 57.5 cm) is between two helmet
sizes, we recommend trying the smaller size fi rst.
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C. CHOOSING A HELMET THAT FITS PROPERLY
Choosing the right helmet is very important. The helmet must fi t
properly to give you the best protection if you fall off or are involved in
an accident. Here’s how to choose a helmet that fi ts properly:
Step 1: Measure your head size
Step 2: Ascertain the right helmet size
Step 3: Check that the helmet fi ts properly.
1. MEASURING YOUR HEAD SIZE
Measure your head size by placing a fl exible measuring tape around
your head approximately one fi nger’s width (2 cm) above the eyebrows.
This will give you the greatest circumference of your head. The
measured value represents your head size in centimetres.