World Centric® compostable lawn an leaf bags are made from a blend of biodegradable synthetic plastic, PBAT, and corn starch. This heavy duty liner is 1 millimeter thick, making it durable for collecting yard clippings or other heavy material at home or in a commercial setting. These bags have an expected shelf life of 12 months and should be stored away from heat sources, direct sunlight, and moisture. As a certified B Corporation, World Centric® is dedicated to upholding the highest standards of social and environmental responsibility, transparency, and accountability. We proudly give 25% of our profits to grassroots organizations driving global change. Choose World Centric® compostable foodservice products and make a difference today!