Bottle Cap

FIG. 1 is a front, left and top perspective view of a bottle cap, showing my new design. FIG. 2 is a rear, right and bottom perspective view thereof. FIG. 3 is a front elevation view thereof. FIG. 4 is a rear elevation view thereof. FIG. 5 is a left side elevation view thereof. FIG. 6 is a right side elevation view thereof. FIG. 7 is a top plan view thereof. FIG. 8 is a bottom plan view thereof. FIG. 9 is another perspective view of the bottle cap in a first usable state; and, FIG. 10 is another perspective view of the bottle cap in a second usable state. The dashed broken lines depict portions of the bottle cap that form no part of the claimed design. The dotted lines in FIGS. 9 and 10 describe the environment structure of the bottle cap and form no part of the claimed design.