The Press-Lock ROM Arm Sling can be worn after cast removal or surgery as rehabilitation. It composes of alloy aluminum, injection parts, PU foam liner, and hook with loop closures. The Press-Lock ROM hinge is adjustable to limit the arm and elbow in normal motion and its design helps to adjust the desired angle very quickly and easily. The range of motion is from 0 to 120-degree flexion. Sidebars was made by lightweight alloy aluminum. High-density foam liner with two panels design can enhance comfort and ventilation.