Sales of sneakers resulting from Yeezy’s collaboration with Adidas grew by 31 percent to nearly $1.7 billion in 2020, according to a document compiled by UBS, details of which were reported by Bloomberg. According to the Swiss bank, the partnership generated $191 million in royalties for Yeezy, the sneaker and apparel business of the American rapper Kanye West. UBS said Yeezy’s sneaker business kept growing at a “staggering clip,” in the document prepared this February, which placed a total value on the entire Yeezy business of $3.2 billion to $4.7 billion. The Swiss bank estimates that Yeezy’s new deal with The Gap could account for some $970 million out of Yeezy’s overall valuation. That 10-year agreement focuses on clothing and excludes footwear as Yeezy’s partnership with Adidas in sneakers is set to run through 2026. The shoe deal with Adidas, which dates back to 2013, features a string of limited-edition sneakers that routinely sell out.