This is an extremely important feature on a walking/tracking leather harness during long tracks where the dogs need all the help they can get.In fact this is the main difference between an agitation harness.
The design allows all harness straps to follow the contour of the body of the dog for unbeatable comfort and full range of motion of the head, shoulders and all four legs. The harness adjusts to fit your dog as he grows and changes.
The harness does not restrict the air flow of the dog in any way.
 The training leather harness has a padded breast plate to cushion the dog when it hits the end of the line while doing protection work.
The dogs need this cushion to absorb some of the shock of a tie out.
This breast plate causes too much of an air flow restriction to be used in long police or Search/Rescue tracks. An agitation harness is also to heavy for long distance tracking.This harness is available in black
Around the chest behind the front legs(green color on the picture): 28-33 inch (72-84 cm)
Around the neck of the dog(red color on the picture): 21-31 inch (54-79 cm)
Size Medium :Around the neck of the dog(
red color on the picture): 14-22 inch (35-56 cm)
Around the chest behind the front legs(
green color on the picture): 25-36 inch (62-91 cm)
Size Large :Around the neck of the dog(
red color on the picture): 18-28 inch (45-70 cm)
Around the chest behind the front legs(
green color on the picture): 30-40 inch (75-100 cm)
Size Extra Large :Around the neck of the dog(
red color on the picture): 24.5-34.5 inch (61-86 cm)
Around the chest behind the front legs(
green color on the picture): 38-48 inch (95-120 cm)