Serious patent background here...we had a nice chat with Abominable Labs ' CEO-Jack Cornelius that didn't venture too far above our pay grade level. This ABOM goggle for snow sports types-available in six colors and 4 lens options (interchangeable)-is really a breakthrough for no fog protection. Easy to operate- the ABOM is comfy -light, fits faces with 3 layer foam -thermal formed-with impact protection, and with just one press of the button-the thin (REALLY) film transparent heater (that's hooks up to a usb rechargeable power source)-built into the lense- heats up the surface to slightly warmer than dew point-that prevents condensation. Think of it like a car rear window defroster...All waterproof electrical connectors of course. No wonder the Defense Dept. came a' calling. Abominable Labs game changing tech-no fog goggles-NOT anti-fog fyi. Powered by KLAIR™technology...thin film transparent heater actually built into the lens...works like a rear defr...