Good maintenance demands reconditioning of the helmet not less than each individual two (2) years by NOCSAE Licensed Reconditioner employing only new factory substitute liners while in the reconditioning approach. Proof of any of the following circumstances will operate to void this guarantee: Request a Quote Observe the Online video https://andersonubgbe.bloguetechno.com/how-adult-medium-speedflex-can-save-you-time-stress-and-money-66131492