Abstract: An expandable container (EC) having a firm compartment and at least one foldable portion serves for storing instant food or drink for infants. The coverable aperture of the EC provides for hermetic sealing of a sterilized instant feed or drink and for further dispensing of various liquids for the preparation of food or drink, as well as for attachment of a nipple or a spout. A nipple retaining device (NRD) for feed bottles consists of a base rig attachable to the feed bottle and or the EC and an upper ring to which a nipple or a spout are attached. The upper ring is pivotally connected to the base ring and when closed, is securely locked to the base ring by means of a latch. The upper ring when sprung open provides for dispensing various liquids into the feed bottle and or the EC.