Melamine Sippy Cup with graphics from the new Nursery Rhyme Collection holds 6 ounces and is BPA-free and dishwasher safe. Hand wash for best results. Do not microwave. 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.