The ornamental design for a shoulderslingpurse with closure strap, as shown and described.
FIG. 1 is a perspective view of an embodiment of a shoulder sling purse with closure strap.
FIG. 2 is another perspective view of an embodiment of a shoulder sling purse with closure strap.
FIG. 3 is a front view of an embodiment of a shoulder sling purse with closure strap.
FIG. 4 is a rear view of an embodiment of a shoulder sling purse with closure strap.
FIG. 5 is a right side view of an embodiment of a shoulder sling purse with closure strap.
FIG. 6 is a left side view of an embodiment of a shoulder sling purse with closure strap.
FIG. 7 is a top view of an embodiment of a shoulder sling purse with closure strap; and,
FIG. 8 is a bottom view of an embodiment of a shoulder sling purse with closure strap.
The broken lines showing a portion of the shoulder sling purse are for the purposes of illustrating environment and form no part of the claimed design.