Bolle Tempest Sunglasses, CompetiVision Gun, Shiny Black Plastic B-Clear Technology features ultra-lightweight Trivex lens material, Dual-sided hydrophobic/oleo phobic coatings CarboGlas Coating gives an armor shell from scratches and abrasions Optics Control System is an interchangeable lens system that allows you to swap out the lenses for different lighting conditions b88 frames are made of the finest grade nylon for incredibly lightweight, durable, flexible frames Adjustable Nose Pads to tailor a custom fit, hypoallergenic and comfortable Our polarized lenses align light rays from the sun, giving you a crystal clear view at all times The only prescription program which ensures optimum precision, comfort and frame balance for sports sunglasses Our polycarbonate lenses are 20 times more impact resistant than glass and three times lighter