Half-frame, "blade-style" safety glasses provide an excellent level of eye protection for enhanced safety at the workplace. Scratch-resistant lenses filter 99.9 percent of harmful UVA, UVB and UVC rays for safe, outdoor use. Flexible nylon frame and strong polycarbonate temple construction provide increased durability. Nonslip, rubber temple components and nose pads keep these glasses in a comfortable position and resist perspiration. Integrated temple accessory receptors also improve airflow when not in use. For a more secure fit, the temples can be attached to an elastic retainer strap (sold separately). Glasses are tested to ANSI Z87.1+ High Velocity Impact Protection and optical requirements. Glasses are also tested to MIL-PRF-32432 Ballistic Fragmentation, Class 1.