JT's exclusive "dual-fusion" technology has helped us produce a revolutionary exoskeleton that can be found in our Flex-8 system. This system offers integrated venting on the jaw which has also been strategically designed to encourage deflections and bounces. While the JT Spectra Flex-8 offers a smaller target to your opponent than previous Spectra systems, the Flex-8 goggle still maintains its ability to accept the Vortex II fan and other popular JT accessories. The full coverage model protects the top and the back of your head and may also be detached if necessary. All models come with a removable visor.