Keep your jewelry free from tarnish with our zip-close, transparent copper-colored plastic bags. Designed to be safe for all metals—even when in direct contact—these anti-tarnish bags prevent tarnish and corrosion on both ferrous and non-ferrous metals. They also offer protection for electronics, optics, plastics, photographs, paper products, and more. Non-toxic and environmentally friendly, these fully recyclable bags contain no charcoal, oils, or volatile chemicals. Made from 100% virgin low-density polyethylene (LDPE) specially treated to resist tarnish, the copper color of the bag acts as an indicator; when it darkens to black, it's time to replace it with a new one.