We are striving to find the most sustainable, eco-friendly Postal Mailing packaging for our customers. These Biodegradable Mailing Bags are made from 100% Recycled film making them PPT Exempt (Plastic Packaging Tax Exempt). Our "green" postal bio bags are fully recyclable, and are made from eco-friendly polythene and recycled plastics containing a biodegradable additive that accelerate the degradation process far faster than a virgin film. The bags will first degrade into small fragments and then biodegrade into carbon dioxide, water and humus within 2-5 years, depending on the disposal environment.