Product description: for feeding children when on the move.Designed to hold bottles, VIA and Magic beakers.The ThermaBag insulating bag can hold two Philip Avent bottles, two magic cups or four via potsIts insulating lining made of Thinsulate 3 M keeps milk cold or water Hot For Four hours.Lightweight, flexible, not at all cumbersome; Comes with an adjustable shoulder strap; practical for day trips and holidays.