Helmet Size Chart

Size US Hat Size Inches Centimeters
X-Small 6 5/8 - 6 3/4 20 7/8 - 21 1/8 53 - 54
Small 6 7/8 - 7 21 5/8 - 21 7/8 55 - 56
Medium 7 1/8 - 7 1/4 22 1/2 - 22 5/8 57 - 58
Large 7 3/8 - 7 1/2 23 1/4 - 23 1/2 59 - 60
X-Large 7 5/8 - 7 3/4 24 - 24 1/4 61 - 62
2X-Large 8 24 3/4 - 25 63 - 64
3X-Large 8 3/4 25 1/4 - 25 3/4 64 - 65
4X-Large 9 26 - 26 1/4 66 - 67

 

HOW TO MEASURE


USING A FLEXIBLE TAPE MEASURE:
CIRCUMFERENCE - MEASURE AROUND THE FOREHEAD