Finding the best helmet fit is a challenge. Scientists have identified over 10 different head shapes and OEM companies design helmets around 1 specified head shape and offer padding and tension systems in hopes of fitting most people. The problem is for most people they feel a helmet either feels too tight, too loose, or is just uncomfortable. IsoFit is the isometric approach to helmet fitting. The entire liner system conforms to any head shape for a custom fit, with no concentrated pressure points. IsoFit will enable helmet brands to offer consumers the best helmet fit technology available.