The ornamental design for a surfingcap, as shown and described.
FIG. 1 is a perspective view of a surfing cap showing the design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a first side view thereof;
FIG. 5 is a second side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is an enlarged detail view of the interior surface of the surfing cap of the knot used to secure the strap to the cap.
The broken line outline of the vent holes, knot, and button on the surfing cap depict portions of the article that form no part of the claimed design. All remaining broken lines depict claimed stitching.