The Rosewood Compostable Poop Bags are 100% compostable and environmentally friendly as they are made from plant derived bioplastics such as corn starch bioplastics. They are strong and extra large, which is larger than standard bags. The bags will biodegrade into carbon dioxide, water, and biomass by at least 90% in 180 days in standard composting conditions leaving no harmful residues behind. The bag includes four rolls. Warning: Danger of suffocation. Keep out of reach of babies and children.