These 5 square glass bowls are freezer and dishwasher safe, making them extra useful! Each lid has a date dial to track freshness of food and has a different colored lid. Smallest - orange, small - light green, medium - yellow, large - red, largest - blue. Ranging from smallest to largest: approx. 3 1/2" W–6 2/3" W x 1 1/2" H–2 3/4" H. They hold approx. 5 oz. to 37 oz.