The ShockLiner is a critical part of the helmet. It reduces the force that goes into the wearer during impact. Once a helmet has undergone an impact, the force absorbed by the helmet alters the ShockLiner. This greatly reduces the effectiveness of the helmet in that same area. The replacement ShockLiner comes in three sizes Regular, X-Large, and XXL. It is recommended that the shock liner be replaced annually.
Our ShockLiner fits our Aspida™ and Aegis™ Helicopter Helmet> as well as the SPH style helmets.