It wasn't an official partnership during the London 2012 Games, but now Michael Phelps has indeed stated that he is working with SOL REPUBLIC.
In an update on his Facebook page, Michael writes,…[quote]I’m excited to partner with SOL REPUBLIC to offer the headphones I wore before every race on eBay to benefit The Michael Phelps Foundation, which helps me to support the next generation of swimmers. Bidding starts today, check it out![/quote]
For those unaware, the charter of The Michael Phelps Foundation is to work to promote healthy, active lives, especially for children, primarily by expanding the opportunities for participation in the sport of swimming.
Great stuff Phelps.