Purelast is a unique new material that is a natural, durable, practical alternative to plastic. Purelast is an all-natural, plant-based, zero-plastic, petroleum-free material that can be molded and shaped like plastic. In fact, Purelast is more durable than melamine, with superior stain and shatter resistance. And Purelast is dishwasher safe, too. It's really a great material with a very appealing texture and look to it.