Really good
I have an Irish Doodle who was trained to be great with a Gentle Lead but now he's all grown up (and I want another option). I took my doggo to a local barkery store where they put a couple of different sizes on. As an Irish Setter mixed with a Poodle, he has an irregularly deep but narrow chest. Found the right size and he's really great in it, with the lead attached at the front. It has been a great purchase... especially like the handle on the spine. When smaller dogs enter the dog park, I grab the handle and give the smaller dogs time to do business and get comfortable. After that, everyone plays well together.