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?
Looks custom. It seems unlikely that Lenovo would offer this.
Run your fingernail across the transition in each direction. Is the carbon fiber part higher than the rubber coating, or lower?
I really doubt it’s actually carbon fibre why would you put carbon fibre on a laptop made of plastic? The plastic would deform from impact before the carbon fibre would, so it would have no benefit.
Perhaps Lenovo decided that they wanted to add a single design element to their laptop in a brave new move to be interesting.
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.
Btw regarding the design, closest term I know on a similar design is the “racing stripe”.
Some people use carbon foil for cars to customize their thinkpads.
see here: https://thinkwiki.de/Geh%C3%A4useteile_mit_Schutzfolie_versehen
Pretty cool looking whatever it is lol.