Tamper-Evident Bags are offered in a variety of stock sizes and custom configurations to meet the customer’s need. We offer two versions of tamper-evident bags. One version is the reusable bags, which are secured by inserting the TydenClip into the Tyden Chamber. The other version is the one-time or one-trip bags which features a tamper evident closure system and can only be open by cutting or destroying the bag. Tamper-Evident Bags are used to secure documents, personal effects, cash, or other valuables.