I use buddy belts on my guys now and we love them!! Maximo is a member here she sells them at her dog boutique....
Designer Dog Clothes, Dog Accessories | W. Field's Dog Boutique
I really like them. I've even picked up my little guy off the ground by his leash when an idiot in my neighborhood let her pack of dogs out of her car and they came running towards us. He didn't slip out...He didn't make a peep so I know it didn't hurt him and other than getting mauled by an overly friendly lab, he was fine.
They have lots of fabulous colors too!!