First thoughts..
it's a soft filament (licorice whip, Red Vine candy soft), with a bit of texture.
How on earth will this get the crud out of the extruder?

End thoughts...
Pretty good, it got my filaments flowing smoothly again.
Went from inconsistent flow, to smoother flow and improved prints.

Experience:
I cut about 3' piece just enough to get through the tube to the print head.
Loaded it like any other filament, used 230 Deg print temp, Maximum Esun recommended range.
I had a really congested nozzle I was hoping to clear, the poking wire wasn't clearing.

Filament started to flow just a little bit, then nothing else came out.
Checked all points where it could jam up. Eventually finding it all wound up in the feeder gears.
Once I got that cleaned up, I tried manually feeding the filament through the top of the extruder during the loading process.
Just pulled the tube out of the top and fed the filament, fingernails helped grip and gently push.

Eventually the previous filament started to flow out, curling and swirling as it came, eventually it started to change to clear.
kept feeding manually for about 5 more inches. Progressively the extrusion smoothed out and didn't curl up, a nice smooth stream.