The lens tissue in this booklet is the world's finest optical tissue. It is extremely soft and virtually lint-free. Safe for any optical surface such as camera lenses, microscopes, telescopes, monoculars, and binoculars. Each tissue is perforated for easy removal. When cleaning a lens use care not to scratch it. Some optical glass surfaces have reflection-reducing coatings that can be damaged by excessive cleaning or excessive pressure. Keeping a cover or lens cap on your lens when not in use will protect it from dirt and pollution.