What the Little Button on Your Seat Belt Really Does – A Tiny Feature With a Big Purpose

You do it every time you get in the car:
Slide the seat belt across your body…
Click it into place…
And go.Car dealership

But have you ever noticed that small button near the top of the shoulder strap — where the belt meets the door frame?

It’s not broken.
It’s not loose.
And it’s definitely not just plastic.

That tiny button is actually a smart safety feature — one most drivers use without even knowing its name or purpose.

Let’s uncover what it really does — so you can use your seat belt more comfortably, safely, and confidently.

Because real innovation isn’t always flashy.
Sometimes, it’s hiding in plain sight — right by your shoulder.

What Is That Button Called?