FIG. 1 is a top, right and front perspective view of the seat cushion of this invention;

FIG. 2 is a top plan view;

FIG. 3 is a bottom plan view;

FIG. 4 is a right side elevational view;

FIG. 5 is a left side elevational view;

FIG. 6 is a front elevational view;

FIG. 7 is a rear elevational view;

FIG. 8 is a top, front and right perspective view of a seat cushion, showing our new design, the broken line showing of the fastener is for environmental purposes only and forms no part of the claimed design;

FIG. 9 is a right side view of the modification shown in FIG. 8;

FIG. 10 is a left side view of the modification shown in FIG. 8; and,

FIG. 11 is a rear elevational view of the modification shown in FIG. 8.

The top, bottom and front views of the modification shown in FIG. 8 are the same as the views shown in FIGS. 2, 3 and 6 respectively.