Ah, that makes sense.

Looking through the Castelli site there are definitely a bunch of jerseys that are very thematically similar but I didn't see one that matched this funky triangle one. Here's an example of a Castelli jersey and anAli express knockoff jersey. They're different but even being generous and calling it an homage might be a bit of a stretch Seems like there are plenty of plain jerseys there if anyone is looking for plain kit so I don't think I'd ever buy knock-off team kit.