Bags are without doubt the most used flexible packaging for packing fruit and vegetable products weighing more than half a kilogram. They guarantee the best performance in terms of tenacity, visibility and shelf life. Depending on the content characteristics, they may be in net or film. The first are used for all products needing a correct air exchange, such as citrus fruits, potatoes and onions, whilst the film bags are instead used for all products that need to maintain their humidity, like carrots, celery, radishes, lettuce and apples.