Amazon.com : Momcozy Breastmilk Storing Bags, Temp Sensing Momcozy Breastmilk Storing Bags Momcozy Bottle Brush Kit Review: Cleaning Revolutionized by Karen Momcozy Breastmilk Storage Bags 120PCS, Temp Sensing Discoloration Milk Breast milk Bags, Temp Sensing Discoloration Milk Storing Bags for. TEMP Sensing Discoloration: Help parents to keep track of milk temp at any time. 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: Designed with double sealed side seams & double zipper to protect and freeze breastmilk. When sealing, press your fingertips and make a sound. Presterilized & BPA free thickened milk bag, safely build your milk bank. Zero Contamination: Milk import export separation design ensures that there is no contamination. Simply open the sealing strip when pouring milk, and cut along a cutting line when you need to breastfeeding. It's that easy! Space saving Design: Breast milk storage bags can be freezed super flat or upright. This unique feature also allows defrost or freeze milk quickly. Friendly Tips: Capacity is not exceed 6OZ. After milk is poured into the bag, it is necessary to release the air. After thawing, heat it to 40C (104F). More Customers Options: Momcozy 200 Pack Breast Milk Storage Bags are the perfect pack size to support new parents' expressing and storing in their first few months!