The ornamental design for a sunglasseslanyard, as shown.
FIG. 1 is an environmental perspective view of a sunglasses lanyard showing my new design and showing a pair of sunglasses in phantom; the sunglasses forming no part of the claimed design;
FIG. 2 is a first view of the sunglasses lanyard laid flat and enlarged by showing the lateral portions using match lines;
FIG. 3 is a second view of the sunglasses lanyard laid flat and enlarged by showing the lateral portions using match lines;
FIG. 4 is a third view of the sunglasses lanyard laid flat and enlarged by showing the lateral portions using match lines; and,
FIG. 5 is a first end view of the sunglasses lanyard laid flat, the opposing second end being the same in appearance as the first end.