This harness has been amazing for our hyperactive, ridiculously strong dog. Walks are now tolerable and she is learning much better to keep a slack lead. When we clip her in on the chest and run it out either over her shoulder or under her front leg any excess pulling swings her around. The change was immediate, and this has allowed both myself and my son to walk her, instead of just my husband. She also has a habit of backing out of her previous harness when clipped in the car, which the long body of this harness prevents. Highly recommended for headstrong pullers and escape artists. Easy to put on too!!