【High-Quality Glass】 Made of heat-resistant glass, it can be used in ovens and microwaves. 【Multi-purpose】 A variety of bowl sizes are available to accommodate various dishes such as salads, soups, and desserts. They can be stacked for efficient space utilization. 【Brand Reliability】 Iwaki's Pyrex series is known for its durability and design, and is a product you can use for a long time. - Material: Glass - Set of 4 - Brand: Iwaki - Model Number: Pyrex This was a gift, but I haven't used it and it's been stored away. I took it out of the box for the photos. The box has some damage (tears). Shipping is included and will be sent via anonymous delivery. Thank you for looking.