The Marna Extreme Frozen Rice Containers are large rectangular containers made of polypropylene material, designed for use in both the microwave and freezer. With a capacity of 390.0 cubic centimeters per container, these containers are dishwasher safe and feature a stylish pack of 2. The containers are easy to use and clean, making meal preparation a breeze. With the Marna brand known for quality and reliability, these containers are a convenient and practical addition to any kitchen.