We have an Olde English Bulldog- he has a barrel chest and a smaller than expected head. He's a very good boy and doesn't pull out of his collar, but if I need to give it a tug, it slips off easily. The harnes works perfectly. Once I got the vlecro chest strap situated, it fit just fine. He was a little suspicious of it at first, but after the first time he wore it, he was excited to get in it and go places and do things. Just a few days later and he lines up perfectly waiting for me to put it on him. He loves his harness and he looks so cute in it.
