Tomatoes are plastic and can be rinsed in water. Most of the fruit and vegetable are made of a polystyrene product. It is preferred to keep them away from water as they will damage. Some of the fruit and vegetable products have a slight latex cover to give it the frosted look. This should be kept away from sun or direct heat. These items are stunning for table decoration and they last for a long time when properly cared for. Many deli and fruit stores use these as decoration. All items are sold in single units.