Progressive Fruit and Vegetable Keeper is perfect kitchenware that will extend the shelf life of fruits and vegetables including carrots, radishes, grapes, green beans or cherries. It is made of durable and BPA-free plastic material that is easy to clean and maintain. There is an adjustable vent to regulate the air circulation and a water reservoir where you need to put 1 to 2 tablespoon of water to maintain the desired moisture level. It is convenient to clean in the dishwasher.