Umai Dry bags have a complete and consistent bacteria barrier, all while enabling the flow of water out of the plastic foil. This allows for the highly desirable food aging and maturation of traditional meat and dairy products, but with a barrier against contamination, bacteria, and inedible mould growth. This ensures even greater food safety, and accomplishes it all without losing the proper maturation results and the special flavours of the product. All of this occurs while product yields increase, user handling is minimized, and unnecessary waste is eliminated.