What are a Custom Embroidered Patches? Custom patches, in simple terms, is create by using a fabric backing and thread. It also known as a cloth bandage. Generally speaking, people usually think of a custom patch as a piece of cloth with a pattern or kinds of information, like a logo on it. But, as mentioned above, the custom patches is more like a miniature billboard. On this miniature billboard, you can transfer any information you want to convey to the customer, for example, brand or your logo. In other words, anything you want to express can be sew on the custom patches.