Keeps Fruit and Vegetables Fresher - Longer The Bags that Produce Shippers Use Worldwide Certified Organic PEAKfreshUSA produce bags slow down the natural aging process of fruit and vegetables, preserving both the freshness and the life of your produce. How PEAKfresh produce bags work PEAKfresh produce bags remove ethylene gas to prolong the life and freshness of the produce. Most fruit and vegetables release ethylene gas after harvest. Exposure to the gas accelerates aging in fruit and vegetables. Unlike ordinary plastic bags, PEAKfresh produce bags 'breathe' so that damaging gases produced by the fresh produce are removed. PEAKfresh produce bags minimize moisture formation and inhibit bacteria growth. Maintains fruit and vegetables at their peak.