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Fly 9MM Half Helmet.

Fly 9MM is a simplistic version of the German WWII style helmet.


  • D.O.T. approved thermoplastic poly alloy shell
  • Dual density EPS liner
  • Removable, washable Coolmax® comfort liner
  • German WWII styling

Size Chart

Helmet Sizing Information:To achieve proper helmet fitment, begin by finding your head circumference size using the method described below. Remember that the helmet sizing you choose should fit around the crown of your head comfortably with no pressure points. The cheek-pads should fit firmly around your face. Once your chin strap is fastened, grab the chin bar of the helmet and move it side to side. Your cheeks should move with the helmet, which should not slide across your face. Different thickness cheek-pads can be purchased to obtain the perfect fit.

Head Measurement Instructions:Wrap flexible tape measure around your head approximately on inch above eyebrows and ears. Use this measurement (in either inches or centimeters) to find your helmet size in the chart above


Size Chart

SizeUS Hat SizeInchesCM
XS6 5/8-6 3/420.50-21.2553-54
SM6 7/8-721.25-22.0055-56
MD7 1/8-7 1/422.00-23.0057-58
LG7 3/8-7 1/223.00-23.7559-60
XL7 5/8-7 3/424.00-24.5061-62
XXL7 7/8-824.50-25.2563-64

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Most Helpful Reviews :

Fly 9MM Review

by - verified purchaser
Ordered this German style helmet and overall I'm happy with my purchase. Arrived in about 4 days from purchase. The helmet looks good . I got a small and it looks a little big on me even though it fits perfect. Any ways great looking helmet , great shipping time. No worries here. Thanks team.

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Browse 1 question and 1 answer
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s this helmet low-profile?
A shopper on Oct 31, 2014
Best Answer:No, this is a DOT helmet. It is not low profile.
Reply · Report · Justin PStaff on Oct 31, 2014