Kurgo"s Tru-Fit Enhanced Strength Harness 3055 series is a crash-tested dog car harness to keep your dog safe when he travels. It comes with the features of our other harnesses, but includes all-steel Nesting Buckles based on the time-tested harnesses of rock climbers and linesmen. When used with the included seatbelt tether, it keeps your dog safe in a car accident.