| After the ball falls to the grass, Couch angrily unsnaps the chinstrap on his helmet and looks down. |
| As Pedregon approached the end of the track, his chinstrap came off, forcing him to get off the throttle. |
| A loose chinstrap allows a helmet to flop around, and thereby leaves you, the user, susceptible to injury in the event of a crash. |
| I don't think Reggie had his chinstrap fastened, and as Jackie Slater was blocking him, Reggie's helmet fell down over his face. |
| The martingale is that piece of leather going from the chinstrap of the bridle to either the chest strap or the bellyband. |
| I unsnapped my chinstrap and removed my Kevlar helmet, balancing it on the muzzle of my rifle. |
