Jingle Jungle Mom’s Love Reusable Ice Pack is ideal for breastmilk storage, which makes a great helper for moms-on-the-go. It keeps breastmilk safely chilled for up to 12 hours or more when used with Jingle Jungle cooler bags or other cooler bags or boxes of equal quality. You may need approximately 3 icepacks to achieve this optimum result. Non toxic and safe, which its gel is made of food grade material. Place ice pack in freezer for a minimum of 8 hours prior to use. Place frozen ice pack on top or at the side of the items in the cooler bag or box.