Helmets withstand the test of time. Using 770 donated bicycle helmets, Alyssa DeMarco, Dennis Chimich, and Gunter Siegmund found little or no evidence of helmet age-related deterioration in impact performance. Within the limitations of the sample and test conditions, these findings do not justify replacing a damage-free helmet every 2-10 years as recommended by some helmet manufacturers. A full-text, view-only version of the study “Age has a Minimal Effect on the Impact Performance of Field-Used Bicycle Helmets” is available here: http://bit.ly/helmetage. Thank you to our collaborators: Craig Good at Collision Analysis and Jeff Bakal at the University of Alberta.