Root Pouch degradable plant pots are made of PET derived from recycled plastic water bottles. This material is melted back to a sterile liquid state then spun into fibers. Because the plastic is re-melted it is once again sterile making it a great choice for growing plants for human consumption. Root Pouch does not use new petroleum as some other fabric companies do. So Root Pouch does not contain any toxins and it is BPA free and UV resistant.