The ornamental design for sunglasses without lenses but having six horizontal slats crossing the field of vision of each eye, as shown and described.
FIG. 1 is a perspective view of sunglasses without lenses but having six horizontal slats crossing the field of vision of each eye, illustrated with one temple piece in a collapsed position and another temple piece in an extended position, showing my new design;
FIG. 2 is a front elevational view of the invention, illustrated with both temple pieces in the extended position;
FIG. 3 is a rear elevational view of the invention, illustrated with both temple pieces in the extended position;
FIG. 4 is a left-side elevational view of the invention, illustrated with both temple pieces in the extended position, the right-side elevational view being a mirror image thereof;
FIG. 5 is a top plan view of the invention, illustrated with both temple pieces in the extended position; and,
FIG. 6 is a bottom plan view of the invention, illustrated with both temple pieces in the extended position.