Make mealtime a breeze with the Similac Twiston Nipple, a convenient and disposable solution designed for your growing infant. This single-hole nipple features a secure twist-on design that attaches easily to most standard bottles. Each nipple and ring comes individually pre-packaged, eliminating the need for sterilization or washing before use. Plus, the leak-proof design ensures a mess-free feeding experience for both you and your baby. Simply twist the nipple onto your bottle, fill it with formula, and you're ready to go! Remember, Similac Twiston Nipples are disposable and should be replaced after each feeding.