The ornamental design for a filteringstraw, as shown and described.
FIG. 1 is a front alevational view of a filtering straw showing our new design; the rear and side elevationai views are mirror images of the front eievational view;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a perspective top view thereof;
FIG. 5 is an enlarged exploded view of area 5 within FIG. 4; and,
FIG. 6 is a cross-sectional view of the filtering straw of FIG. 1 taken in the direction of line 6-6 of FIG. 2.
The dot-dot-dash broken lines in a rectangular shape in FIG. 4 and surrounding FIG. 5 denote a detail boundary and form no part of the claimed design. The dot-dash-dot broken lines used in FIGS. 1, 4, and 6, denote a symbolic break that forms no part of the claimed design. The areas between the break lines form no part of the claimed design. The evenly spaced broken lines in the drawings depict portions of the filtering straw that form no part of the claimed design.