Abstract: A slip-on seat belt tension adjustment clip for relieving the tension from the shoulder strap of a seat belt assembly. The clip is made from a flexible polymer and is one piece. It has a handle with two outwardly extending clip arms. One of the clip arms has a convex curve along its inner surface and the other clip arm is spaced a constant distance from the first clip arm. A user may simply slip on the clip adjacent the guide loop and relieve the normal constant tension which otherwise exists in the shoulder strap. The clip may then be easily removed by pulling it off.