These 30-gallon compostable liners are made from a mixture of synthetic and starch-based plastics. These liners are a great way to line your kitchen compost bins, making it easy to separate food scraps, paper towels, and other compostables. These bags are leak and tear-resistant, 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!