The curved inside edge of this clever plate keeps food from sliding off the plate, to help make self-feeding easier for children or adults. The plate is 23 cm (9 inches) in diameter with a 2.5 cm (1 inches) rim and a 1.3 cm (1/2 inches) edge. Dishwasher safe up to 80 C (180 F) and microwave safe. Made from polypropylene.