If you are looking to use a USB-C to USB-Cable to charge your USB-C MacBook Pro, your USB-C power adapter and USB-C cable need to support USB Power Delivery.
The Anker PowerLine USB-C to USB-C Cable is retailing for US$15.99 (S$23) and is available in 3ft (0.9m).
The Apple USB Type-C Cable is retailing for S$42 and comes in only one length which is 2m. I wish they have it in 0.5m and 1m as well.
There are no markings on the USB ends on the cable because there is no need to since it has a reversible plug orientation. This is similar to the Apple Lighting cable as there is no marking on the Lightning end of that cable as well.