These approximately 33 ounce hinged lid lunch boxes (based on liquid measurements up to the top of the bottom portion of the container) are made of sugar cane fiber that is a by-product of the sugar refining process. Approximately 7" x 7" x 2 1/2". Not designed for liquids due to closing mechanism. The boxes are unbleached - natural offwhite color. Biodegradable and compostable. They can be used for hot or cold foods, and are thick and sturdy, microwaveable, freezer safe, oil resistant and capable of handling boiling water. Pack of 50. Made in China. Eco Categories: Recycled, biodegradable, agriculturally based, less toxic.