HYPER has put its new charger up for crowdfunding on Indiegogo. Despite packing a maximum rate of 100 watts (W), it is described as even smaller than the MacBook Pro brick with the same kind of port. This is due to its gallium nitride (GaN) technology, which can offer greater power transfer in a smaller footprint.
https://www.notebookcheck.net/The-HyperJuice-is-the-world-s-first-100W-USB-type-C-charger-with-GaN.452807.0.html