This step in dog harness is very easy to use.
Don't forget to get the matching 4' plain leash or opt for a round one.
To get the correct size you should measure your dog around the widest part and add two inches. This is because the harness should come off the dog's back by an inch on each side which will put proper tension on the right parts of the harness. The harness needs to come off the dog's back a little or it will make for a very uncomfortable walk for your pet!