Women's World Cup players' unusual collars at tournament explained - Soccer - Sports - Daily Express US
Hard-to-see experimental device Luke Kuechly wears on field might save his brain
The only FDA-cleared device that helps protect the brain during head impacts.
Luke Kuechly wearing experimental neck collar in 2017 - ESPN - Carolina Panthers Blog- ESPN
Panthers Luke Kuechly trying out collar to reduce concussion risk
The story behind the experimental collar worn by Luke Kuechly
A collar might help prevent concussions in sports like soccer: Study - ABC News
Two years later, Luke Kuechly still wearing Q-Collar: 'If it's gonna help, you might as well try it, right?' - The Athletic
Q-Collar: New equipment helps protect the brain of high contact sports players