These round microwavable containers and lids offer an eco-friendly takeout option for hot or cold foods. They are designed to support foods of various sizes and are available in a variety of depths. Container bottom and lid are recyclable, reusable, and able to withstand the extreme temperatures of the refrigerator and microwave. They are easily stackable and feature a smooth black plastic bottom with a clear plastic lid. Made of FDA compliant, USDA food approved PET plastic. PET (Polyethylene Terephthalate) is a strong, lightweight, shatter-resistant plastic. It provides a strong barrier against water vapor, oils, alcohols, and UV rays.