What’s the Little Button on a Seat Belt For? A Little-Known but Essential Feature

3. A Northern European Invention

But who came up with the brilliant idea of adding a button to a seat belt? It might sound trivial, but small innovations like this make everyday life easier. In truth, no one knows exactly who invented it. However, it’s believed to have originated from car manufacturers Mercedes and Volvo. Both brands are pioneers when it comes to passenger comfort and safety innovations.

This clever little invention didn’t go unnoticed—other automakers quickly adopted it. The result? Today, that small seat belt button is a necessity found in nearly every car.

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