The Kren USB-C to Micro-USB cable comes packaged in a zip lock style plastic bag. The cable is failry flexible and features a nice thick nylon braided sheathing for protection. Both ends are metal with heavy duty strain reliefs. I could not find any warranty information but I do not think it will matter as well as the cable is made. As far as I can tell this cable is full USB-C compliant and I had no issues charging my Nexus 6 from the USB-C connector on my XPS 13.
Overall this is a very nice cable. It is built well and does its job. I do wish warranty information had been provided with the cable.
If you are interested in purchasing this cable it can be found here.