A light weight, ventilated design. Features the Dial Fit system, fully adjustable straps and low profile. Measure around the widest part of your head. 20"=6 1/2", 20 1/2"=6 5/8", 21"=6 3/4", 21 1/2"=6 7/8", 22"=7", 22 1/2"=7 1/8", 23"=7 1/4", 23 1/2"=7 3/8", 24"=7 1/2". Small is 6 5/8 - 6 7/8, Medium is 7 - 7 1/4, Large is 7 3/8 - 7 5/8.
