Appropriate maintenance demands reconditioning of the helmet at least each and every two (2) years by NOCSAE Licensed Reconditioner making use of only new factory substitution liners while in the reconditioning procedure. Proof of any of the following conditions will work to void this warranty: Request a Quote Check out https://riddellspeedflexadultlarg95161.ageeksblog.com/30130854/speedflex-adult-large-things-to-know-before-you-buy