The LolaLykkes Breast Pump Carry Cooler Bag is a stylish and functional bag that provides plenty of room for your pump, but it also keeps your milk fresh and cool for up to 6 hours. The perfect accessory for any eco-conscious parent, this bag is made from recycled PET material. So not only are you ensuring that your stash stays good while it's away from home; but youre also doing your part in helping make a positive environmental difference.