Every Sleepypod 🚗 car safety restraint comes equipped with PPRS technology. In the event of a collision or hard stop, Sleepypod's PPRS technology prevents a pet from being ejected while helping to reduce the damaging forces on the pet. Rigorous testing includes the same dynamic crash testing that ensures the performance of child safety restraints. It was tested at U.S., Canadian, and E.U. child safety standards, then independently tested and safety-certified by the Center for Pet Safety.