"Using these Direct-Pump adapters, Kiinde Twist Pouch™ breast milk storage pouches twist-lock onto pumps from ALL major brands, for leak-free, transfer-free pumping, directly into the pouch. These adapters can also be used to attach nipples from most major brands directly to Twist Pouches, for gas-free feeding directly from the pouch. Kiinde Twist Pouches™ combine the toughness and leak-proof guarantee of a bottle with the cost-effectiveness, compact size, and disposable convenience of a breast milk storage bag. After pumping into Twist Pouches: STORE and organize pouches in the Kiinde Keeper™ breast milk holder and organizer, THAW and WARM quickly and safely using the Kiinde Kozii™ breast milk warmer and bottle warmer with steam-free SAFEheat™ technology, and FEED transfer-free, gas-free, and hassle-free using the Kiinde Squeeze™ natural feeding bottle with Active Latch™ nipples."