シートベルトロック

The clip grabs the webbing tight enough that my shoulder strap finally stops digging into my neck on long drives. I grabbed a second one so I'm never stuck fiddling with the harness when I switch cars.

I keep one of these in my work truck and another in my wife's SUV, so swapping her harness between vehicles is finally painless. The locking mechanism holds firm on even bumpy gravel roads, and it takes about two seconds to click in.

The click when it locks is so satisfying—no more yanking the strap back out mid-drive. I grabbed two as extras and now don’t have to swap it between cars, which is a total time-saver.