Abstract: An integral cap assembly for a portable liquid container that has a reversible spout, includes a cap portion with an opening and a pair of grooves formed at opposite sides of the opening. A closure cap is coupled to a first flexible member, where the cap portion is coupled to a second flexible member. The first and second flexible members are each coupled to a remaining flexible member. The closure cap can be fitted either above the opening or below the opening of the cap portion, to thereby provide an integral cap assembly with no separate parts when the reversible spout is in either the closed, non-pour position, or the open, pour, position.