25 pairs of HPS (High Pressure Sodium) safety glasses, designed for the convenience of large-scale operations. 100% polycarbonate wrap-around style safety glasses, blocks light from all angles. Sleek and light weight. Designed for the use of high-pressure sodium lights. Block 100% of UV light emitted from grow lights include a special color correcting lens to invert lamp color back to neutral colors for less eye strain and ease of detecting deficiencies.