Restricted items are products or materials that are not allowed to be transported, sold, or used due to legal, safety, or regulatory reasons. These items can include dangerous goods, such as explosives or toxic substances, as well as certain types of wildlife or cultural artifacts. The restrictions are often put in place to protect public health, safety, and the environment. Different countries and organizations have their own lists of restricted items, which can vary widely. For example, airlines may have specific rules about what can be carried on flights, while customs authorities enforce laws regarding imports and exports. It is important to check these regulations before attempting to transport or purchase restricted items.