FIG. 1 is a top perspective view of a sport bottle lid, showing our new design, wherein the top portion thereof is shown in an open position;

FIG. 2 is a bottom perspective view, with the top shown in the open position;

FIG. 3 is a top perspective view, with the top shown in a closed position;

FIG. 4 is a top plan view, with the top shown in the closed position;

FIG. 5 is a right-hand side elevational view, with the top shown in the closed position, wherein the left-hand side elevational view is substantially identical;

FIG. 6 is a rear elevational view; and,

FIG. 7 is a front elevational view thereof.

The bottom plan view forms no part of the claimed design.