These biodegradable bags are made from cornstarch and are fully biodegradable. They will biodegrade in approximately 10 to 45 days in a composting environment. The bags can be used for the collection of food waste, as well as the storing of fruit and vegetables. 3 gallon. Case of 500. 16.9" width x 17.7" length. Eco Categories: Biodegradable, agriculturally based.