A forthcoming sale by Sotheby’s will include a pair of Kanye West Nike Air Yeezy 1 sneakers. The model was unveiled publicly during West’s performance at the 2008 Grammy Awards and was released in a limited series the next year. The Air Yeezy 2 followed in 2012. Nike had never before produced a shoe model for a non-athlete. West would soon part ways with the brand, however, and in 2014 signed on with Adidas. As this is a private sale, Sotheby’s will not be disclosing the amount generate by the sale, which it projects will exceed $1 million. The seller is Ryan Chang, co-founder (with Simone Duff) of Applied Arts, a media company in New York City that, in Chang’s words, “features sneakers as art objects.” He has agreed to have the sneakers put on display in Hong Kong on April 16.