Per the NFL’s Tuesday press release, all you need to do is use the hashtag #ProBowlVote and a player’s first and last name.
Voting is open through Tuesday, December 13. According to the NFL’s press release, Pro Bowl players are determined by the consensus votes of fans, players and coaches. Each group’s vote counts one-third toward determining the 88 All-Star players who will be selected to the Pro Bowl. NFL players and coaches will cast their votes on Friday, December 16.
The final Pro Bowl roster will be revealed on December 20 during a live primetime special on NFL Network.