JSP PowerCap Infinity Pre Filters | 100pk | CEU150-000-000This pack of 100 genuine JSP pre filters is all you need to prolong the lifespan of the main filters in your PowerCap Infinity Helmet. These inexpensive pre filters act as a sacrificial first line defence against the majority of dust and debris that would otherwise be collected by the main filters, preventing them from becoming blocked and blinded. When replacing the pre filters, you should always replace them in pairs to ensure protection levels are