The ornamental design for a moisttowelettecontainer, as shown and described.
FIG. 1 is a front elevational view of a moist towelette container showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a side elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a perspective view thereof with the front panel in a half open position.
The broken line showing of a moist towelette is included for the purpose of illustrating environmental structure and forms no part of the claimed design.