Retention sleeve

Description

FIG. 1 is a front, right-side, bottom, perspective view of a retention sleeve embodying the design;

FIG. 2 is a rear, right-side, top, perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a left-side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines in the drawings depict portions of the retention sleeve that form no part of the claimed design.

Claims

The ornamental design for a retention sleeve as shown and described.