Frigid temperatures outside and warm, moist eyes inside are responsible for foggy goggles. Most models these days have a hydrophobic coating on the lens to absorb moisture from your eyes before it condenses and breathable foam around the frame to promote passive air circulation. The Phenom Turbo Fan has an extra feature: A tiny and quiet battery-powered fan mounted on the frame provides active ventilation when you need it.
The manufacturer puts it simply: “If you can open a can of beer, you can change these lenses. If you open six cans of beer, you can still change these lenses.” Release the snap closure on Giro’s Manifest ($200) Pop Top frame, flip back the outriggers and slide out one lens in exchange for another. Perfect for fickle spring skiing. (Comes with two spherical lenses: gold and rose.)