The ornamental design for a personalfloatationdevice, as shown and described.
FIG. 1 is a front, right, and top perspective view of a personal floatation device, showing my design.
FIG. 2 is a rear, left, and bottom perspective view thereof.
FIG. 3 is a front elevation view thereof.
FIG. 4 is a rear elevation view thereof.
FIG. 5 is a right side elevation view thereof.
FIG. 6 is a left elevation view thereof.
FIG. 7 is a top plan view thereof.
FIG. 8 is a bottom plan view thereof; and,
FIG. 9 is a partial enlarged view of an area labeled 9 in FIG. 1 comprising an clasp.
The broken lines shown in the drawings are included for the purpose of illustrating portions of the personal floatation device that form no part of the claimed design.