The ornamental design for a flexiblecontainer for fluentproducts, as shown and described.
FIG. 1 is a perspective front view of a flexible container for fluent products showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a right side view thereof; and,
FIG. 7 is a left side view thereof.
The broken line showing portions of the flexible container for fluent products is included for the purpose of illustrating environmental structure and forms no part of the claimed design.