If you're not old enough to remember, the neck roll was a padded collar extension that some players -- most notably Steve Grogan, Eric Dickerson, and Willie Lanier -- used to wear around their necks.

Kerr studied the Adams roll and Cowboy collar used in the 20th century ... It’s a problem for neck and head injuries in football.” Kerr said he researched the body’s movements on full ...

Two new studies involving high school football and hockey players says a new wearable neck compression collar may prevent or reduce brain injuries from concussions and collisions in sports. Tom ...

NEW YORK (CBSNewYork)-- The battle to tackle football ... Collar.' "We want to have the helmet touch the Kerr Collar and disperse the forces to the Kerr Collar and not let the helmet and neck ...