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It looks like a typical thinkpad rubber back, but with the x1's "carbon fiber" design cutting through it with a wide diagonal line. Google only gives standard rubber backs. Anyone have any idea what this version of the design is called?
If you're looking for what the design is called, they're zigzags. The shape of the design and the angle of the pattern obscures the pattern. If you were to rotate it so that the two acute angles of the parallelogram were pointing up and down you should see the parallel zigzag patterns more clearly.
So it's a parallelogram filled with thick zigzags. I couldn't find anything with google, so it's probably a custom job.
yea ik about the zigzags
i was asking about the parallelogram design lol