V-Gard, Blue, Standard Suspension Slotted Protective Cap, Made Of A Durable Polyethylene Shell & A Staz-On Suspension System That Adjusts Snugly For A Perfect Fit, Meets Or Exceeds The Application Requirements For A Type I Helmut, As Outlined In ANSI Z89.1 1997, Class E & G, The Suspension System Is Adjustable To Fit Hat Sizes From 6-1/2 To 8.