Under Armour - No one else has been as unbeatable in the pool as Michael Phelps #RuleYourself | Facebook
![Michael Phelps Teams with Under Armour for 'Rule Yourself' Campaign Pre-Summer Olympics!: Photo 3602349 | 2016 Summer Olympics, Memphis Depay, Michael Phelps Photos | Just Jared: Entertainment News Michael Phelps Teams with Under Armour for 'Rule Yourself' Campaign Pre-Summer Olympics!: Photo 3602349 | 2016 Summer Olympics, Memphis Depay, Michael Phelps Photos | Just Jared: Entertainment News](https://cdn.justjared.com/wp-content/uploads/2016/03/phelps-teams/michael-phelps-underarmour-before-rio-olympics-09.jpg)
Michael Phelps Teams with Under Armour for 'Rule Yourself' Campaign Pre-Summer Olympics!: Photo 3602349 | 2016 Summer Olympics, Memphis Depay, Michael Phelps Photos | Just Jared: Entertainment News
![Michael Phelps Teams with Under Armour for 'Rule Yourself' Campaign Pre-Summer Olympics!: Photo 3602350 | 2016 Summer Olympics, Memphis Depay, Michael Phelps Photos | Just Jared: Entertainment News Michael Phelps Teams with Under Armour for 'Rule Yourself' Campaign Pre-Summer Olympics!: Photo 3602350 | 2016 Summer Olympics, Memphis Depay, Michael Phelps Photos | Just Jared: Entertainment News](https://cdn.justjared.com/wp-content/uploads/2016/03/phelps-teams/michael-phelps-underarmour-before-rio-olympics-02.jpg)