The ornamental design for a bottleinsulator, as shown and described.
FIG. 1 is a perspective view of a bottle insulator, showing my new design in a closed configuration;
FIG. 2 is a front elevational view of FIG. 1;
FIG. 3 is a rear elevational view of FIG. 1;
FIG. 4 is a left-side elevational view of FIG. 1;
FIG. 5 is a right-side elevational view of FIG. 1;
FIG. 6 is a top plan view of FIG. 1;
FIG. 7 is a bottom plan view of FIG. 1;
FIG. 8 is a bottom front perspective view thereof, illustrated in an open configuration; and,
FIG. 9 is a bottom rear perspective view of FIG. 8.
The broken lines showing a bottle in FIG. 1 depict environmental matter and form no part of the claimed design. The broken lines illustrating a zipper pull in FIGS. 1, 3, 4, and 6-9 and internal portions of the bottle insulator in FIGS. 6, 8, and 9 depict portions of the bottle insulator that form no part of the claimed design. The remaining broken lines represent stitching, and are part of the claimed design.