IKEA - KALAS Tumbler, Assorted Colors (Set of 24) -- set of 24 -- . Perfect for both fun everyday meals and special parties. Made of durable plastic that is safe to put in both the dishwasher and microwave. Stackable; takes up very little storage space. Designer: Henrik Preutz Microwave-safe. Microwave-safe; heat food up to 200F. Dishwasher-safe. Dishwasher-safe up to 158F (70C).