MiniGrip® Reclosable GreenLine™ biodegradable bags are reliable and 100% earth-friendly. Each of these bags are designed to be entirely biodegradable and will break down completely into organic material. Each of these bags are ASTM D5511 compliant and will biodegrade in a landfill. They are constructed from low-density polyethylene (LDPE), which makes it completely biodegradable. These bags are designed to protect its contents during shipping and storage.