Using these Lincoln cutting and grinding goggles is easy. Just put them on your face before starting any chipping, grinding, or machining work. Make sure they fit snugly to ensure maximum protection. When using, always keep in mind that they are designed to protect you from sparks, spatter, particles, sand, dirt, and heat. Don't wear them if they are damaged. For maintenance, clean them regularly with a soft, dry cloth. Store them in a cool, dry place when not in use.