myBauer Re-Akt Helmet - 3D Printed Digital Foam - Ice Hockey Equipment - ModSquadHockey
Concussion Prevention in Football: The Limited Benefits of Helmets - In Defense of Football
NFL awards 4 projects in helmet safety development program – The Denver Post
Better helmets, sensored mouth guards part of effort to make football safer
Biomechanics, Free Full-Text
The Football Helmet from Vicis Enhanced with 3D Printing - 3Dnatives
NFL's Safest Helmets Absorb Impact With 3D Printing Instead Of Foam
Riddell and Carbon® Produce First-Ever 3D Printed Football Helmet Liner