"What Is It?" It's not paper! These fun and functional not-paper bowls 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. Dishwasher safe and sturdy. And even better, they will save you money over using disposable bowls which always need replacing. An all around winner!! Includes 4 bowls. Dishwasher safe. Not microwaveable. Includes a set of four bowls, 6" in diameter.