The Nike Air Max 93 with its sock-like fit was first released in 1993 and called the Air Max 270 for its 270 degree exposed Air-Sole unit. These Nike running shoes were manufactured using a new process called blow molding in which gas was injected through a tube that force plastic into a mold. This new process was meant to provide maximum impact protection for serious runners because it contained more air than previous Air Max models. The Air Max 93 was reissued in 2003 with an Escape-influenced edition and an Air Mowabb edition. A variety of colorways have been released since the first reissue in 2003.