FOR GENTEX AND MSA GALLET Measure your Head Circumference as shown and match that number in the size box located in the order form for your helmet. Remember, if you fall between two sizes, choose larger size.
ALPHA HELMETS
When
measuring your head for an Alpha Helmet, measure side to side first,
then front to back and use the circumference measurement last. If you
fall between two helmet sizes, choose the larger helmet.
Circumference Head
Width
Head Length
Size
21 1/2 - 22 3/4"
5 1/2 - 6 1/2"
7" - 8"
Medium
22 3/4 - 24"
5 3/4 - 6 1/2"
7 3/4 - 8 1/2" Medium Long
22
3/4 - 24"
6 1/4 - 6 3/4"
7" - 8"
Medium Broad
23 1/4 - 24 1/2"
6 3/8 - 6 3/4"
7 3/4 - 8 1/2" Large
24
1/4 - 25"
6 3/4 - 7 1/8"
8 1/2 - 8 3/4" Extra Large
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