Klhis Zip -

He soon realized the (Kinetic Localized High-intensity System) was designed by his grandfather, a retired postal engineer, to help people navigate the world faster. But the jacket had a mind of its own. It changed its "zip" based on Leo’s needs:

If he zipped it all the way to the chin, he became nearly invisible to those around him, a ghost in the machinery of the town. KLHiS zip

Leo remembered his grandfather’s old motto: "A man who knows how to manage his wealth must first manage his zip." He realized it wasn't about the speed, but the control. a retired postal engineer