Captain America's uniform is made of a fire-retardant material, and he wears a lightweight, bulletproof duralumin scale armor beneath his uniform for added protection. Originally, Rogers' mask was a separate piece of material, but an early engagement had it dislodged, thus almost exposing his identity. To prevent a recurrence of the situation, Rogers modified the mask with connecting material to his uniform, an added benefit of which was extending his armor to cover his previously exposed neck. As a member of the Avengers, Rogers has an Avengers priority card, which serves as a communications device.