The NFL reportedly is testing a helmet that is specifically designed for offensive and defensive linemen with additional support in the front in an effort to minimize head injuries. 

According to ESPN, Vicis released the helmet that still must undergo testing by the league and the players' union. The additional support in the front adds approximately six ounces of weight, which is the only difference between this Zero2 Trench helmet and the company's Zero2 helmet, which is already used by NFL players.

"It's the stated goal of ours when we started down this road of helmet testing and better understanding concussions and on-field impacts that we would get to the place where helmets would be built for individual positions," NFL spokesperson Jeff Miller said Thursday.