When you slide on the Spy Doom Goggle with Free Bonus Lens, do you prepare to see carnage and mayhem' Doom da doom doom doom ominous thunder in the background. Not quite. The Doom Goggle actually let's you see your way around the mountain clearly, whether it's on blue bird days with one lens or in a blizzard with another. With oversize lenses and the Locksteady quick change system you can see even when the conditions change quickly.Large spherical 5. 5 base ARC display offers tons of peripheral vision with no optical distortion, and the dual lens design features 100% UV protection, high impact resistance, and is treated with anti fog and anti scratch technology. You'll stay fog free thanks to the scoop ventilation, which offers optimum moisture control. Ergonomic triple layer Isotron face foam with Dri Force fleece cushions, breathes, and wicks moisture away from the face, while the flexible frame won't freeze and comforms to sit flush on all face types.