This is the AquaSeal Sea Gold Mask Anti-Fog Gel from McNett for Scuba Masks, Swim Goggles, etc Rated BEST Anti-Fog by Rodale&';s SCUBA DIVING Magazine! The clear choice in anti-fog gels. McNett&';s unique clear formula means long lasting anti-fog protection. Sea Gold is highly concentrated and designed for quick, simple, in-field application. Sea Gold is safe for all glass and plastic lenses and will not harm surrounding silicone or rubber support frames. Not recommended for swim goggles. It Features: Powerful, long lasting formula Clear gel leaves no colored residue Concentrated - Provides up to 600 applications Non-abrasive - Safe for all glass and plastic lenses Non-toxic, biodegradable and alcohol-free Don&';t let your dives be ruined by a fogged out mask!