Made by HARIO Glass™, this cookware is suitable for use in both microwave ovens and conventional ovens. - Brand: HARIO - Included: Instruction manual - Material: HARIO Glass™ - Country of Manufacture: Japan - Usage: Microwave and oven cooking - Functions: Serving, microwave use, oven cooking Thank you for viewing. It's the perfect size for storing leftover rice, side dishes, and anything else, and reheating them in the microwave the next day. It can be stacked in the refrigerator or cupboard, making it very convenient.