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International Helmets ATH Helmet Size Chart

Fitting a International ATH Harness System Helmet:

(1) Place tape measure around the head just above the eyebrow ridges

(2) Convert the resulting measurements, in inches, to the corresponding Helmet Sizes listed on the Helmet Chart!

Please click on the Size Chart to enlarge the print!

***Please note: The top number on the chart is your head measurement in inches. The bottom number is your size to order!