In collaboration with doctors and engineers from the National Football League (NFL) and the NFL Players Association, Oakley has come up with a mouth shield for the NFL’s 32 teams to use on the field to curb the spread of Covid-19. The shield will begin undergoing field tests in the fourth week of July. The leagues’ medical staff is advocating, not mandating, its use. The shield’s plastic sheets extend to the faceguard and incorporate the same Oakley Prizm Lens already in use in NFL, ski and military visors to enliven color and increase contrast. The airways and openings do not allow direct transmission of droplets, according to the chairman of the NFL’s engineering committee, Dr. Jeff Crandall. Not all NFL players are thrilled. Some are worried that the shield will limit the field of vision, and endanger them, or muffle the quarterback when he calls a play directly on the field, and hinder game play. Oakley has apparently carried out tests with players to address these concerns. Oakley is the NFL’s official supplier of visors, but some players might opt for other brands.