Mattress

FIG. 1 is a front perspective view of a mattress, showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a left-side elevational view which is identical to FIG. 5 ;

FIG. 7 is an upper side elevational view thereof; and,

FIG. 8 is bottom side elevational view which is identical to FIG. 7 .