UPDATE (08/01): Complex has confirmed with Jordan Brand and Undefeated that the Undefeated x Air Jordan 4 is launching ...

One of the most popular Jordan collabs in recent memory just went on sale—and there are still men’s sizes available.

Nigel Sylvester’s next Air Jordan 4 “Brick By Brick” has sneakerheads buzzing—no release date yet, but these could rival the Black Cats in rarity.