Stackable chair

FIG. 1 is a perspective view of the stackable chair of the present design;

FIG. 2 is a perspective view of two chairs, shown in a folded configuration stacked vertically one upon the other. One chair is in broken line for illustrative purposes only and forms no part of the claimed design;

FIG. 3 is a back view of the stackable chair;

FIG. 4 is a left-side view of FIG. 1 in folded condition;

FIG. 5 is a top view of FIG. 1 in folded condition; and,

FIG. 6 is a bottom view of FIG. 1 in folded condition.