This easy-to-use device controls the seat belt's tension, is easily adjustable to fit any person, tall or short, big or small, and it helps prevent clothing from wrinkling under your seat belt. The Seat Belt Tension Adjuster is perfect for: bigger people those who regularly wear nice clothes people who find the seat belt uncomfortable the elderly people with limited mobility those who are tired of feeling the seat belt cut into their necks Just about anyone can enjoy the Seat Belt Tension Adjuster! The Seat Belt Tension Adjuster works by attaching to the top third of the seat belt. It allows the user to slacken the seat belt from a half inch to an inch so that the positioning of the belt is most comfortable. Please note that your safety is not compromised when using the Seat Belt Tension Adjuster. The Seat Belt Tension Adjuster does not interfere with the seat belt's functioning. Thus, the Seat Belt Tension Adjuster allows you to drive in both comfort and safety! The Seat Belt Tension Adjuster can be installed in 3 Easy Steps After buckling your seat belt: Detach the top of the adjuster from the bottom by holding both pieces and sliding them in opposite directions. Position the Seat Belt Tension Adjuster on your belt strap, with the red lock and flap facing you. Snap back together as they were originally. Slide adjuster towards the seat belt retractor, and pull the strap, allowing enough slack for your comfort. Lock into position by sliding the red lock to the right; unlock to the left or to re-adjust.