Made from our exclusive braided Sequoia material, the Step-In Harness is much easier to put on the dog and focuses placement around the shoulders rather than the neck area. To determine size measure dog around the chest right behind the front legs. To fit harness onto the dog, open harness and place on floor in figure 8 fashion. Place front feet into each loop. Lift harness up around shoulders and snap buckle together. Adjust to fit. Attach leash to D-rings.