Per the Broncos' press release, "The Axiom features Riddell’s TRU-FIT SYSTEM, which uses 3D imaging of each athlete’s head for a personalized fit and protection system to improve impact response.

The hood covering McMillan’s head and wrapped under his chin, like a ski mask, without covering the face, was then stripped off and he was now scientifically fitted for a Riddell Axiom football ...

The Broncos have partnered with Riddell, a football equipment company, and the Colorado High School Activities Association to supply more than 15,000 brand-new Riddell Axiom helmets to high school ...