Non-toxic melamine Sippy Cup with BPA-free polypro lid and Hedgehog Collection graphics measures 2.5 x 3 inches and holds 6 oz. Dishwasher safe, do not microwave. Hand wash for best results. Melamine looks like ceramic, but at a lighter weight. It's also more durable, but not unbreakable. All our melamine and vinyl-related products are non-toxic and lead-free according to U.S., European, and Canadian standards.