The Spektrum Ostra BIO Plus Goggles bring goggle tech into the future by utilizing bio-based materials without sacrificing any performance. The BIOptic Polarized lens cuts through glare and easily handles the sunniest days of the season while providing crystal clear vision when conditions get a bit dimmer. The magnetic lens exchange system is incredibly easy to use, so as conditions change, we can quickly react to ensure we can see the whole hill.