Using these safety glasses is easy. Just put them on like regular glasses, and adjust them so the nose bridge sits comfortably on your nose and the forehead cushion fits well on your forehead. When using, make sure the side shields are properly in place to protect your eyes from all angles. Always check the glasses for any signs of damage before each use. If you notice any cracks or scratches on the lens, it's time to replace them. To keep your glasses in good condition, clean them regularly with a soft, dry cloth. Avoid using harsh chemicals as they can damage the lens. Store them in a safe place when not in use, preferably in the individual packaging they came in to prevent scratches.