"What Is It." It's not paper! These fun and functional not-paper plates are an Eco-friendly alternative to the traditional disposable dinnerware.Better for the environment since they are reusable and won't fill up the landfills like paper plates.And even better, they will save you money over using disposable plates which always need replacing.An all around winner!! Includes 4 plates.Dishwasher safe.Not microwaveable.Includes a set of four plates, 23cm in diameter.