A bread clip is a device used to hold plastic bags closed, such as those in which sliced bread is commonly packaged. They are also commonly called bread tags, bread tabs, bread ties, bread buckles, or bread-bag clips. By sealing a bag more securely than tying or folding over its open end, the clip or tie may preserve the bag's contents longer. In some cases, the color of the tag indicates the day on which it was baked, although there is no universal standard for the color code.