The ornamental design for an anti-mosquitos wristband, as shown and described.
FIG. 1 is a top isometric view of an anti-mosquitos wristband in accordance with the new design;
FIG. 2 is a right side isometric view thereof, with the left side being an isometric mirror image view thereof; and,
FIG. 3 is a bottom isometric view thereof.
The broken lines shown in FIGS. 1 and 3 are for illustration purposes only and form no part of the claimed design. The dashed line along the outer perimeter in FIGS. 1-3 illustrate stitching.