To provide a drink container suitable for a feeding filled with a solution for powdery milk which can be used without being boiled again in case of use by storing water especially sterilized at high temperature in advance by liquid-tightly fixing a 2nd resin container of unfixed volume to the opening part of a 1st resin container of fixed volume.

A feeding 1 to be sterilized by steam is composed of a 1st resin container 2 of fixed volume which is to be filled with water 4 from an opening part 2A, and a 2nd resin container 3 of unfixed volume having an opening part 3A to be liquid-tightly fitted to that opening part 2A. This 2nd resin container 3 has the hard opening part 3A and flexible walls 3B, a slit 11 for easy opening is formed at one part, a dummy cap 5 having a gas permeable wall 13 is formed at one part of the opening part 3A, and powdery milk 6 is housed inside this 2nd resin container 3. In case of use, the easy opening part 11 of the 2nd resin container 3 is cut, the powdery milk 6 is put into the 1st resin container 2 and mixed with the germfree water 4 and afterwards, the 1st resin container 2 is heated a little.