Feed directly from Kiinde Twist Pouches! Transfer-free, gas-free, and leak-free. Active Latch nipples pop directly into Twist Pouches, eliminating the need to transfer milk from bags to bottles and back again. Active Latch nipples are meant to be used with Kiinde Twist Pouches and the Kiinde Squeeze natural feeding bottle (sold separately). For a complete transfer-free, hassle-free breastmilk collection, storage, preparation, and feeding system: DIRECT-PUMP into Kiinde Twist Pouches, recyclable breastmilk storage pouches with twist-locking caps. Using Kiinde Direct-Pump twist-locking adapters, Twist Pouches twist-lock onto pumps from all major brands, for leak-free, transfer-free pumping. STORE and organize pouches in the Kiinde Keeper breastmilk holder and organizer, and THAW and WARM quickly and safely using the Kiinde Kozii breastmilk warmer and bottle warmer with steam-free SAFEheat technology.