Electronic devices all have the same issue in common - constant contact with the human body which leaves oils, grease, make-up, fingerprints, bacteria, and who knows what else on the devices. This cloth gets this job done without water and without chemicals - two things that could harm your expensive devices This world has evolved into one that lets us communicate, enjoy customized music, and get information anywhere we go. Hand-held digital devices continually collect greasy fingerprints, dirt, oil, and disgusting bacteria.They also have sensitive screens requiring careful cleaning to avoid damage. e-cloth creates a microscopic textured fabric that penetrates and thoroughly removes all these forms of grime with no harm to the devices or the screens. 80% polyester/20% polyamide.