(Shoof) The Speedy Feeder Calf Nursing Bottle features a 3-way adjustable valve, allowing you to adjust the rate of milk flow. Slow for weak calves, fast for aggressive feeders. Peach teat nipple has a natural size, shape, and feel. Teat allows milk flow when calf's jaw is squeezed. Easy-grip bottle allows a one-handed grip when feeding. Wide bottle neck for easy filling and cleaning.