Seems that we have an answer for these strange hybrid apparently, Nike employees in factories could create their own little ‘monsters” by surplus material or b-grades….
Beatmagic from http://tvby.yu-yake.com/
they were made of the surplus of parts or B-grade parts and consumed by the employees and families,not fake but not regular.
they are irregular products.
But in late 1980s and early 1990s,
there were hybrid products through proper channels.
For example,the model,AM1’s upper + AM90’s sole was Air Max (Plus)Leather SC.
the style number and color code of those pairs are correct.
I think they were made of the surplus of regular parts.