While driving the vehicle the second row seat belts, after being buckled for the duration of travel, would randomly come unlatched/unbuckled. This left the passengers restrained by those seatbelts unprotected and leave the owner with no confidence that the seatnelts would hold in an accident situation. It has happened on both sides of the vehicle in the second row seats. This has happened 4 times over the last two years. The problem has not been reproduced or examined by the manufacturer or any other the owner.