The Kiinde Twist Active Latch Slow-Flow Natural Feeding Nipples fit directly onto Twist Pouches, removing the necessity of transferring milk from bags to bottles. They are designed to facilitate and incentivize deep, wide, natural latching, and work alongside a Twist Squeeze™ Natural Feeding Bottle. Simply snap the pouch into the Twist Squeeze Natural Feeding Bottle, press out the air within the pouch, and add a Twist Active-Latch Nipple! Twist Pouches can help avoid gas inclusion in meals without complex venting tools. Comes in a pack of two.