PORTABLE DESIGN AND LIGHTWEIGHT - Can be carried by hand or shoulder conveniently and fashionably. DOUBLE LAYERS BOTTLE COOLER, LUNCH BACKPACK -Top layer is designed for dry objects and fits most breast pumps. The bottom layer is storing and transporting up to 6 breast milk storage bottles with a large ice pack. MULTI-FUNCTION - It's not only a breast pump bag it also can use as a lunch bag, little travel bags. BAG CARE - Hand wash in the tub with a mild detergent or spot clean as needed. Hang upside down to dry ELEGANT PORTABLE AND PROTECT YOUR BREASTMILK - Locks in the cold while keeping your breast milk free of bacteria and full of the key nutrients your baby needs for healthy development. Keeps milk cold for up to 15 hours.