Constructed of flexible, hard-to-crack PET material. Made with post consumer recycled drink bottles which helps reduce landfill waste. Leak resistant bases are also stackable for convenient storage and easy transportation. Ideal for applications -20°F to 120°F. For use with EarthCoice® PET lids. Food Container Type: Base; Material(s): PET - Polyethylene Terephthalate; Material Type: Plastic; Interior Volume Capacity: 32 oz.