These 220 ml (approximately 7 ounces) bowls are made of sugar cane fiber that is a by-product of the sugar refining process. The bowls are bleached with hydrogen peroxide and do not have any coating, so that they are 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. Soft white or natural color - call if it makes a difference to you. Case of 1000. Lids available. Made in China. Eco Categories: Recycled, biodegradable, agriculturally based, less toxic.