24H+ Extended Outdoor Cooling: Momcozy breast milk cooler adopt 360° surround cooling tube technology keeps temperatures consistently cold for over 24 hours, preserving the freshness of your breast milk and preventing nutrient loss during outdoor activities. Simple and Convenient: Just pop the cooling tube in the refrigerator (around 0℉) for 12 hours beforehand (adjust freezing time as necessary), and then move it to the milk cooler for easy use. 22oz Increased Capacity & Separate Storage: 22oz individual storage bottles catering to your storing and feeding needs all day long. To accommodate multiple pumping sessions, use the 2 separate bottles to divvy up warm and cold milk, eliminating spoilage and ensuring your baby's health is safeguarded. Hassle-free Cleaning : The inner bottle can be cleaned and sterilized in Momcozy bottle washer, freeing busy moms from manual cleaning. Outing or Working with ease: With the Momcozy breastmilk cooler, you can easily take it with you wherever you go. breeze through security and bring your breast milk on board. Enjoy hassle-free breastfeeding on the go, at work, or while traveling without the hassle of extra ice packs. Safe and Reliable: Momcozy breastmilk chiller is food-grade tested and BPA-free, ensuring your safety throughout your breastmilk storage journey.