Fret no more about tarnished jewellery, by investing in a pack of our anti-tarnish bags, your jewellery will have the best protection it can get! Using clever semi-conductor technology to transform plastics into a protective reactive barrier against corrosive gases, this stops silver and gold from tarnishing (which is caused by an oxidation process with the air). Intercept Technology‚Ñ¢ polymers are non-toxic, non-abrasive, and environmentally friendly. Intercept‚Ñ¢ does not emit any chemicals or oils and will not leave deposits on the items it protects. this 10 pack of 6x6 inch bags is ideal if you've got a lot of jewellery and need more than a few bags to store them all away! These bags will last up to 10 years, so are really designed to last.