The 509 anti-fog goggle fan eliminates fogging through automated forced air technology. The fan module mounts inside your 509 goggles in seconds, without restricting your vision. It features an "AUTO" fan setting, that will automatically engage the fan when the module senses a rise in humidity. This automated technology provides a hands off solution to any fogging issues.
Designed specifically to fit any 509 brand goggle (2022 and older) as well as backwards compatible with most other goggle brands.
Comes with battery