The Undefeated Air Jordan 4 design was the first collaboration for the Air Jordan brand. Undefeated (UNDFTD at the time) was the first to be selected to work with Air Jordan’s own designers and they created something that is widely considered one of the greatest sneakers of all time. The design came out in 2005, and only 79 pairs were actually produced (making them even more special), and in 2014, one pair was reportedly sold for a hefty $15,000.