Irving's shoe deal with Nike is worth US$11 million, as of 2019.[165] His signature sneakers were the second best-selling line of 2017, behind LeBron James'. The NPD Group no longer tracks signature sneakers but projected that the trend continued into 2018. Irving's themed sneaker collaborations include that of the television shows Friends and SpongeBob SquarePants.[166] The latter collection sold out immediately.[167]