DSO "57" -Matte Black frame/ Smoke lens polycarbonate lens Lens technology: Polycarbonate lenses are 40x more impact resistant than glass. 100% protection from harmful UVA and UVB rays. Rose lens eliminates blue light, giving greater depth perception in cloudy or everyday wearing. Smoke lens provides natural color viewing and increased protection on sunny days. Amber lens provides high definition contrast and increased vision depth for overcast days. You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!