This is an easy-to-use device for rehydrating dehydrated calves. The clear collapsible bag, with graduated markings from 500 mL to 2500 mL, has a large handle for carrying and hanging. Zippered opening allows for easy filling and cleaning. Features a 17? rigid probe with a rounded end that is designed for easy introduction into the esophagus, and preventing tracheal introduction on most calves. Clear tubing is approximately 33? long. Convenient on/off flow clamp included.