Bern Bike Helmet Sizing

Adult 
 

Size	XS - S	S - M	S	M	L
Head Measurement (cm)	48 - 51.5	51.5 - 54.5	52 - 55.5	55.5 - 59	59 - 62

Junior
 

Size	S - M	M - L	S	M
Head Measurement (cm)	51.5 - 54.5	53 - 56	52 - 55.5	55.5 - 59

Kids'
 

Size	XXS - S
Head Measurement (cm)	47 - 51