The ATH Carbon Fiber Helmet is a lightweight, innovative helmet made of carbon fiber with 5 front and 2 back ports for ventilation. The ATH Carbon Fiber Helmet has a comfortable, wrap around harness. World Class ASTM F1163.04a. Black or Brown. Comes with a free carry bag. Sizes 6 1/2", 6 5/8", 6 3/4", 6 7/8", 7", 7 1/8", 7 1/4", 7 3/8", 7 1/2".

ASTM F-1163-04a/SEI Certified.