JT�s exclusive �dual-fusion� technology has helped JT produce a revolutionary exoskeleton that can only be found within our Spectra� goggle line. More specifically, the Flex-8� 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. All models come with a removable visor.