High-quality. Ideal for lenses and other optical surfaces made from glass, quartz or plastic which can be easily scratched. Features: - Soft texture will not damage lenses or optical surfaces. - Chemically pure tissue is free from silicones and other additives. - High absorbency ensures the safe removal of surface moisture and grease. - Thickness: 0.035 to 0.040 mm. - Very strong and leaves no fibres.