The Kiinde Twist Active-Latch Nipples and Twist Squeeze Feeding Bottles bundle allows you to easily collect, store, prepare, and feed breastmilk using Kiinde's innovative milk storage pouches. This bundle includes 2 Kiinde Twist Squeeze Feeding Bottles, 1 Slow Flow Active-Latch Nipple, 1 Medium Flow Active-Latch Nipple, and 2 reusable nipple cases that double as bottle covers. The Kiinde feeding system features twist-locking breastmilk pouches that attach directly to most breast pumps for mess-free, transfer-free pumping and storage. To feed, simply snap the filled milk pouch into the squeeze bottle frame, squeeze out excess air, and pop on the Active-Latch nipple. The nipple's one-piece patented design has a texture that encourages proper latching and seamless transition between bottle and breast. As baby feeds, the pouch collapses to deliver an air-free, gas-free meal that can help relieve colic symptoms. The squeeze bottle design and innovative nipple eliminate the need for milk transfers between bags, bottles, and warming containers, reducing spills and dirty dishes. All parts are BPA, PVC and phthalate-free, top-rack dishwasher safe, and recyclable. For a complete system, add Kiinde milk storage bags, pump adapters, organizers and warmers (sold separately).