Galleyware Sea Turtle 19-Piece Melamine Dinnerware Set, Service for 6 with Platter Scratch and break-resistant Dishwasher safe Designed in the USA Non-skid rings on the bottom of all pieces except platter keep them from sliding on a boat and protect your table so you don't have to use placemats For indoor/outdoor dining, on deck, patio, boat or RV. Not for use in microwave