This stylish, essential cooler for transporting expressed milk is a mom-favoriteConvenient to cool, store and transport breastmilk, this stylish bag is designed for active and working mothersThe insulation on the inside of the bag and contoured ice pack designed for Medela bottles maximises breast milk storage timeIce packs safely store fresh breast milk for up to 12 hoursMade of Microfiber material, the cooler bag can hold four 150ml breast milk bottles (pack of 4 included)The zip closer and handy strap makes it ideal during transportationThe bottles are made of safe plastic designed for long-term storage and retain breast milk's beneficial propertiesThe bottles also feature screw-on lids so that they do not leak when they are stored in the fridge or freezer, or transported when you are travelingThe bottles are dishwasher safe, and have easy-to-read volume marks