www.sitstay.com is selling these, which look very comfortable and flexible for SM dogs:
The link for the harness is:
http://www.sitstay.com/store/equip/harness1.shtml
Pricy but might be just the right thing for some dogs.
The link for the harness is:
http://www.sitstay.com/store/equip/harness1.shtml
Pricy but might be just the right thing for some dogs.