Sizing Chart Reebok 3K Helmet

Helmet Size	Hat Size	Circumference (cm.)	Circumference (in.)
X-Small	6 - 6 5/8	48 - 53	19" - 20.8"
Small	6 3/8 - 7	51 - 56	20" - 22"
Medium	6 7/8 - 7 3/8	55 - 59	21.5" - 23"
Large	7 1/4 - 7 3/4	58 - 62	22.8" - 24.5"