the present invention relates to a multi - layered composite bag used to store bulk type products such as pet food , seeds , fertilizer , cereals , grains , charcoal , sand , gravel , and other bulk products , including without limitation bulk products intended for human and non - human consumption , and provides a more efficient manufacturing process than using a paper / plastic structure . the present invention provides a bag comprising a middle layer of woven mesh tubing to which an outer layer of solid plastic film is adhered using polypropylene or other polylaminates .