The TwoCOOL Double Bottle Bag features a leak-proof lining that is PVC lead and phthalate-free and pulls up for easy cleaning to prevent mildew or odors. It s fully insulated and compact to fit in a diaper bag purse travel bag and more. Includes a J.L. Childress non-toxic freeze-solid reusable 8oz ice pack to help keep your food and drinks cool for up to 8 hours (in moderate conditions). A multi-purpose bottle cooler bag can be used as a lunch or snack bag for a child s daycare or as storage for breastmilk.