The Flex System: Overall flexibility engineered into your helmet’s shell, deal with mask and deal with mask attachment method with hinge clips; lessens influence force transfer to your athlete. In which shells happen to be harmed by a chemical response from the use of incompatible supplies for instance: Riddell SpeedFlex: https://josuesjkqt.blogdigy.com/speedflex-adult-large-can-be-fun-for-anyone-46290916