How long can breast milk be kept in a cooler carrier?

  • You can safely store your breast milk for up to 10 hours* with Pump In Style Advanced and Freestyle breast pump cooler bags.   
  • Direct exposure to the sun, like leaving the cooler in a car, severely reduces the cooling effectiveness. 
  • Breast milk is safe stored in a cooler at/or below 59 degrees for up to 24 hours.
  • The liquid inside the cooling elements is water with food grade dye. The liquid is non-toxic.
  • Medela does not have recommendations for storing breast milk with dry ice. Consult a lactation consultant or healthcare provider for further information.

*When ice pack is frozen solid