Come and see our amazing products. 8L capacity double layer multifunctional ice bag, cooler bag, back pack breast milk preservation bag. It can keep cold for 4 hours when use it alone, up to 12 to 16 hours when used with ice pack.Double zipper design makes it more convenient and more convenient storage. Detachable shoulder strap.Suitable for all kinds of people, including men, women, boys, girls, children,teen,. It can be used as lunch box, picnic bag, sundry bag and small lunch tote bag, providing the best experience in your work place, school, outdoor activities, gym, picnic, travel and so on. Customized is available.Price for over 2000pcs is for sea shipment. Pls confirm further with us if any query about packing info, inventory status and time schedule.