The league instituted a dress code for players. Do they have the right to do that?
The league has broad powers which enable them to institute a dress code (and the NBPA has always acknowledged the league’s right to do so). For example, every player’s contract contains a provision which states that the player agrees to be “neatly and fully attired in public.” In addition, the Commissioner has the general power to penalize players for conduct (which would include dress) detrimental to the league’s best interests.