The JT Flex 8 Thermal Goggle 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.