Nautical nostalgia, PORTSMOUTH is an ode to memories at sea. Created as an alternative to overpriced and under-designed dinnerware, this wonderful Melamine Collection elevates affordable design to include beautiful and ornate designs typically only seen on antique china and porcelain. 100% highest quality melamine. BPA-free. Dishwasher safe (top and bottom rack). Heat resistant. Lightweight and durable. Not Microwave safe.