Abstract: This patent discloses a device to adjust tension in a shoulder belt of a vehicle. The device may include a front cover and a back cover placed within the front cover to form a cover opening. A spring may be secured to an interior of the back cover by the spring anchor, where the spring may be a coiled internal power spring. The device may have a band having a first band end and a second band end, where the first band end may contain hook fasteners and the second band end may contain loop fasteners such that, when brought together, the hook fasteners and loop fasteners may be secured to each other to form a band loop. The device may have a cord connected between to the first band end and the spring and configured to extend through the cover opening.