Guideline Eyegear Surface Bifocal Sunglasses (+1.50) The Surface is quickly becoming our go-to weapon against glare Grilamid BTR frames with rubberized nose pads and temple tips keep the Surface in place under the most rigorous activities With a trim frame, sporting ideal structure for blocking out sun to the far reaches, the Surface is a tremendous on-the-water sunglass Great for medium to strong sun with our darkest lens available, VLT 11.8% These sunglasses have a Polarized Polycarbonate Lens that offers 100% UVA/UVB protection