Sizing Chart Reebok 8K Helmet

Helmet Size	Hat Size	Circumference (cm.)	Circumference (in.)
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 7/8	58 - 63	22.8" - 25"
X-Large	7 5/8 - 8	59 - 64	23.25" - 25.22"