No Fog(tm) treatment: This lens has been treated to reduce or eliminate the chance of them fogging up from a build up of moisture.
Double Layer Lens: These goggles have a double layer lens, designed to reduce or eliminate the 'fogging' inside the goggles when there are quick changes in temperature. A layer of foam along the edge cushions the lenses for durability and to get a little bit of air and moisture movement.
Helmet compatible: The strap is longer to fit around helmets, as well as hats, without stretching it to the max. Helmet compatible goggles also try to place the adjustment clips off center to not interfere with goggle clips that are on the back of most helmets. The shape of the frame also sits well with most brands of helmets.
Soft Face Foam: Soft, hypoallergenic foam is used for all the foam that contacts the face. This foam helps create a seal to keep the elements in their place.
100% UVA/UVB Radiation Protection: Optically engineered to screen out 100% of harmful UVA/UVB rays, so you can ski in the bright sun all day without frying your eyes!
Amplifier Lens: The patented Amplifier Lens increases clarity, contrast, and definition through a sophisticated light transmission process that matches the optimum absorption wavelengths of the eye.
Translation? The amplifier lens are designed to be used in all conditions, if you want a sunlight specific lens look for a chrome lens, if you want a lens that does better in cloudy or night conditions find a goggle with clear, night, or light amplifier lens.