Temp Sensing Color Change: Momcozy Breastmilk Storage Bag helps new parents know the accurate feeding temperature. No need to use a thermometer. Purple is Cold (＜36℃/96.8℉), blue is Optimum Feeding Temperature (36-40℃/96.8-104℉), and white is Hot (＞40℃/104℉). Double Strong Sealing: Milk Bags are designed with double sealed side seams & double zipper to protect and freeze breastmilk. Extra side seal protection ensures protection against leaks, making these milk storage bags healthy and highly reliable. Ensures a spill-free experience even when laid flat. Innovative Side Spout: Breast milk bags adopts new side spout design. Convenient pouring of breast milk, Safely stored in the refrigerator. For a neater experience than ever. Zero Contamination: BPA-free materials ensure the health of infants. Milk import/export separation design ensures that there is no contamination. All processes from filling to pouring can be completed without touching breast milk. 8Oz Larger Capacity: Each bag features a 8 oz/240 mL capacity with markings for measuring the amount of breast milk being stored. After the milk is poured into the bag, the air needs to be released. Momcozy Temp-Sensing Discoloration Breastmilk Storage Bags, 8 OZ Easy to Use Milk Storage Bags for Breastfeeding, Doubled-Sealed, Breastfeeding Essentials, for Refrigeration and Freezing, 200PCS