We claim the ornamental design for a glass, as shown and described.
FIG. 1 is a side elevational view of a glass showing our new design; with the other side view being identical;
FIG. 2 is a bottom elevational view thereof;
FIG. 3 is a top elevational view thereof;
FIG. 4 is a front top perspective view thereof; and,
FIG. 5 is a front bottom perspective view thereof.
The broken line portions in the drawings are for illustrative purposes or show the environment and do not form part of the claimed design. The bold dash-dot lines shown in FIGS. 1 to 5 illustrate a boundary of the design and do not form part of the claimed design.