Cordova's shatter-proof SLAMMER(TM) glasses are designed to fit over prescription glasses. They provide a wrap-around style with brow guard, integrated and vented side shields, and uncoated or coated (scratch-resistant) lens. They meet ASNI Z87.1+ standards and provide 99.9% UV protection. Clear, Uncoated Polycarbonate Lens. Clear Polycarbonate Frame. Wrap-Around Style with Browguard. Single Lens Design. Integrated & Vented Side Shields. Fits Over Prescription Glasses. Integrated Nose Piece. Meets ANSI Z87.1 Standards. Provides 99.9% UV Protection.