Insole for footwear

FIG. 1 is a perspective view of an insole for footwear showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a distal side elevational view thereof;

FIG. 4 is a medial side elevational view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a rear elevational view thereof.

The dotted line portions of a sandal shown in FIG. 1 are for environmental purposes and do not form part of the claimed design.