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Principal 950 Modular Helmet Sizing

Size	Head (cm)	Hat Size
SM	55-56	6 7/8-7
MD	57-58	7 1/8-7 1/4
LG	59-60	7 3/8-7 1/2
XL	61-62	7 5/8-7 3/4
2XL	63-64	7 7/8-8

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

How to Measure

H Head
Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, repeat for good measure and use the largest measurement.

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