I claim the ornamental design for a U-shaped cushion sleeve for use with arm-brace cuff, as shown and described.
FIG. 1 is a top view of a U-shaped cushion sleeve for use with arm-brace cuff;
FIG. 2 is a left side view thereof;
FIG. 3 is a front side view thereof;
FIG. 4 is a rear side view thereof; and,
FIG. 5 is a perspective view thereof in use with an arm-brace cuff of a crutch.
The broken line showing of an arm-brace cuff and crutch is included for the purpose showing unclaimed environmental use and forms no part of the claimed design.