Protective cast cover for bathing

A cover is adapted to be worn over a user's limb to shield a bandage, dressing or cast from exposure to water. The cover includes a generally elongate body defined by a shell formed of a flexible, water resistant and air breathing material. The shell surrounds an interior of the cover, including a lower interior chamber and an upper interior chamber. An open top end communicates with the upper interior chamber and is sized and configured to permit passage of the user's limb and the cast, bandage or dressing therethrough and into the upper and lower interior chambers. A cinch strap with a releasable securing mechanism closes the open top end snug around the user's limb to provide a first barrier against water entry into the interior. An inner cuff separates the upper and lower interior chambers and includes an elastomeric opening that fits snug against the user's limb, above the cast, bandage or dressing, to provide a second barrier against water entry into the lower interior chamber.