I love this harness. It is called a Buddy Belt and built very sturdy. You can even pull them up from their leash if a big dog comes near. I belong to a Yorkie meetup group and many of the owners love this harness cause it does not even get near their trachea. Here is the website
http://www.buddy-belts.com/m_4.asp
We went for a walk today and had to pull her up fast.