Calling all sneaker designers! 21 Mercer in Soho of New York, New York, is once again allowing customers to customize the Nike Air Force 1 iD MX in their exclusive design studio, by appointment only though. 21 Mercer is the only location in the U.S. that is doing this. Studio AF1 has upgraded to include today's top materials including luxe suede leather, patent leather, and full grain. Text can be etched or handwritten along with other options for your custom palette. So be sure to make an appointment at 21 Mercer because it's an opportunity you won't want to miss.