Dark Grey Arm Saver Arm Rest Pad-by-WholesaleCarCovers The Arm Saver relieves stress and strain on the arm and elbow while driving. You can use the M5-RoadPro armrest on any vehicle door panel. These armrests can be used with the window up or down, during winter, spring, summer and fall, the comfort is there all year round. This product is not recommended for use with aftermarket window tint.