This variant of the stylish Pyramex Isotope safety glasses feature a Black Frame and H2Max Indoor Outdoor Anti-Fog Lenses. The H2Max Anti Fog Lens is designed to offer superior anti fogging and is durable enough to withstand repeated cleaning. The lenses also deliver 99.9 percent UV-A/B/C protection. The H2 MAX Anti-Fog Lens are top of the line for humid environments or when moving from one extreme temperature to another.