Mattress

[0001]FIG. 1 is a perspective view of a mattress, showing our new design; and

[0002]FIG. 2 is a front elevational view depicting a foot end of the mattress shown in FIG. 1;

[0003]FIG. 3 is a right-side elevational view of the mattress shown in FIG. 1;

[0004]FIG. 4 is a left-side elevational view of the mattress shown in FIG. 1;

[0005]FIG. 5 is a back elevational view depicting a head end of the mattress shown in FIG. 1; and,

[0006]FIG. 6 is a bottom plan view of the mattress shown in FIG. 1.

[0007]The broken lines in FIG. 6 indicate portions of the mattress that form no part of the claimed design.