These 13-gallon compostable bags are made from a mixture of synthetic and starch-based plastics. These bags are great to line your kitchen compost bin, making it easy to separate food scraps, paper towels, and other compostables. These bags are BPI Certified Compostable and will compost in 2 to 4 months in a commercial composting system. Let us help apply sustainable practices in all areas of your operation!