The ornamental design for a portablecooler, as shown and described.
FIG. 1 is a perspective view of a portable cool box showing my new design;
FIG. 2 is a side view thereof;
FIG. 3 is an end view thereof;
FIG. 4 is a perspective view of the portable cool box with a lid of the portable cool box in an open position thereof;
FIG. 5 is a perspective view of the portable cool box with a lid of the portable cool box in an open position and showing a bottom of the lid;
FIG. 6 is a top view thereof;
FIG. 7 is a top and side view of the portable cool box with the lid of the portable cool box removed;
FIG. 8 is a bottom and side view of the portable cool box with the lid of the portable cool box removed; and,
FIG. 9 is a perspective view of the portable cool box with a lid of the portable cool box in an open position and a strap of the portable cool box removed.
The lid and strap are shown removed in FIGS. 7 and 9, respectively, for clarity of illustration.