How a game-changing helmet design could prevent concussions - WINK News
Former Detroit Lion Casey FitzSimmons discusses NFL tech to reduce concussions
Former Detroit Lion Casey FitzSimmons discusses NFL tech to reduce concussions
Changing How We Detect and Treat Sport Concussions - Penn Medicine
Concussion Fears Prompt Local Schools to Adjust Their Football Programs
Defend your Head introduces foam shell for football helmets to reduce head trauma - Philadelphia Business Journal
Helmets don't eliminate concussions. It's time for the NFL to ditch them, NFL
Can helmet design reduce the risk of concussion in football? in: Journal of Neurosurgery Volume 120 Issue 4 (2014) Journals
Chester Springs-based Defend Your Head adds Penn, Temple to roster of clients for helmet shell - Philadelphia Business Journal