The Spectra Pink Cooler Bag Kit is great for mothers to help transport and store breast milk. The Cooler Bag Kit contains a reusable Freezer Pack and an insulated lining to allow breast milk to be kept cold for extended periods of time. The cooler bag is equipped with a zipper closure and carrying handle. Each Spectra Wide Neck Bottle included in the Spectra Pink Cooler Bag Kit is BPA-free and can store expressed breast milk for up to 1 day inside of the Pink Cooler Bag with Freezer Pack.