Don't know if it's a necessity buy, or not, but it's certainly a welcome addition to the control, as it keeps everything secure in it's own snug little compartment.

Nice addition to keep the steam controller neatly tucked away.

Definitely a nice addition to cover the controller from various elements.

While not entirely necessary for the Steam Controller as it comes with a nice box, the XBox One controller's packaging doesn't quite feel like it is designed for long-term storage and a case to store the controller and the accessories is a welcome addition.

A nice addition for the protection of your controller.

Great as it has storage for the unused cable and usb-stand-thingy It also keeps dust off of my controller and keeps it safe in my bag