US D594972 S1
The ornamental design for a sanitary napkin, as shown and described.
FIG. 1 is a top plan view of a sanitary napkin according to a first embodiment of the present invention; and,
FIG. 2 is a bottom plan view of the sanitary napkin shown in FIG. 1.
The broken line showing of the adhesive tabs in FIG. 2 is included for the purpose of illustrating environment and forms no part of the claimed design.
The shading depicted in FIG. 1 represents a pattern viewable from the top surface of the sanitary napkin.
Side views of the sanitary napkin have been omitted since the sanitary napkin is flat and devoid of ornamentation.