Be prepared to modify to prevent dog slipping out backwards

We had seen reports of dogs backing out of Julian harnesses. We therefore spent a lot of time adjusting fit, according to instructions, and it looked secure. After 3 weeks use without problems, our dog backed out of the harness whilst crossing a busy road. Fortunately she came straight to me. I now use with a karabiner attaching harness to collar to prevent this. Well made harness but be prepared to modify either by connecting the harness to the collar or by adding a strap between front legs.