Even the best helmets can’t fully prevent concussions, raising the stakes for supplemental safety innovations. In a laboratory study simulating varsity-level football collisions, engineers tested three commercially available shell add-ons across multiple helmet models and impact speeds. All three add-ons – Guardian NXT, SAFR Helmet Cover, and Guardian XT – reduced peak head accelerations and concussion risk compared to controls, with Guardian NXT showing the most substantial effect. Notably, when both players in a simulated impact wore add-ons, risk reductions were even greater. As this study shows, add-ons can close the gap between current protection and what athletes actually need. 𝗥𝗲𝗮𝗱 𝗺𝗼𝗿𝗲: link.springer.com/article/10… 𝗦𝘁𝘂𝗱𝘆: How Shell Add-On Products Influence Varsity Football Helmet Performance? 𝘗𝘶𝘣𝘭𝘪𝘴𝘩𝘦𝘥 𝘖𝘤𝘵. 2, 2024 𝗔𝘂𝘁𝗵𝗼𝗿𝘀: @nestark_bme, Mark T. Begonia, Caitlyn Jung, and @strowson @virginia_tech @vtengineering @BEAMvt @ICTASVT 𝗦𝘂𝗯𝗺𝗶𝘁 𝘆𝗼𝘂𝗿 𝗺𝗮𝗻𝘂𝘀𝗰𝗿𝗶𝗽𝘁: link.springer.com/journal/10…