Adidas reportedly paid Kanye West $10m (£7m) to collaborate on the limited-edition 'Yeezy' trainers, but the deal doesn't appear to have paid off.
Adidas signed West in 2013, with the Yeezy line intended to boost sales in the US, where it has been steadily losing ground to Nike and newer rival Under Armour.
Analysis of Adidas' results shows that the firm's revenues in the US have been dropping between 2011 and 2015.
In 2011, the firm's US sales stood at 3.1bn, falling to 2.97bn for the full year 2014.
Its performance in 2015 has been more positive on a quarter-by-quarter basis, with first quarter sales coming in at 591m, rising to 643m for the second quarter and again to $776m for the third quarter.
But that recent turnaround isn't down to the Kanye effect, according to NPD analyst Matt Powell.
"When I look at the data, the Adidas growth is not coming from any styles even vaguely associated with West," he told Marketing. "Sales have been negative most of the time since West's signing."
Part of that is due to the line's limited availability.
According to Powell, there have been fewer than 50,000 pairs available to retailers. "We sell more than 300m pairs of sneakers in the US each year, so 50,000 is negligible," he said.
He added: "The sales of the shoe have not offset that [$10m] expense."
Powell points out that any halo effect from West should have kicked in much earlier, and that 2015's improving sales performance is down to Adidas' own hard graft.
http://www.marketingmagazine.co.uk/...s-yeezy-collaboration-kanye-west-not-paid-off
Obviously being so limited, Adidas couldn't have expected the shoes alone to pay off. But interesting that there's no discernible halo-effect either.