The Sweet Protection Boondock II L RIG Reflect Replacement Lens swaps into the Boondock II L goggle to cover a wider range of light conditions. RIG lens technology sharpens contrast and cuts color distortion, while Clear AF inner lens technology triples the anti-fog effectiveness of a standard lens. A 2. 8mm cylindrical lens resists impact, and a 3D-sculpted lower edge cuts down on glare reflecting up from the snow.