It’s fitting that you’ll see Suns players walking around with vests that make them look like Iron Man. Much like the Marvel superhero, the Suns’ training staff also uses technology to get an edge on its opponents. For those not familiar with Iron Man, the superhero has a circular device attached to his heart that is the source of his power. Similarly, the Suns’ training staff uses spandex-like training vests that have a circular device on the heart that measures power.
Courtesy of NBA.com