Skullerz OSMIN Safety Glasses feature an Over-the-Glasses (OTG) wraparound lens for a wide field of vision and seamless fit over prescription frames. These safety glasses feature polycarbonate lenses to protect against impacts and filter 99.9 percent of harmful UVA, UVB and UVC rays. The frame features a nylon and soft rubber design for added durability and flexibility, while a molded-in brow guard and side shields provide enhanced protection from debris. Integrated brow venting enables airflow for all-day comfort. To provide a custom, secure fit on a variety of faces, the rubber temples can be easily bent and re-bent. Built-in soft rubber guards on the frame and temples protect prescription frames and lenses from constant movement and harmful scratching that can occur with some over-the-glasses safety glasses. Safety Glasses Style: Over-the-Glasses; Frame Color: Matte Black; Frame Material: Polycarbonate; Lens Material: Polycarbonate.