Our harnesses have two buckles - one for the neck strap and another for the chest strap. When it comes to putting on a dog harness, the easiest way is to undo both buckles and place the harness on your pup's back. Once it is placed, you can put your pup's leg through and then do both buckles up. This same method can be used by placing the harness on the floor and having your pup step into the harness, and bringing the straps up around them.