American River Ultra Choke-free Harness (Royal Blue, Large (Chest 19"-21" Weight 16-25 Lbs)) Trachea Safe - Choke Free Patented Design Pulls from the Chest ONLY Conforming Shape Fit Seam Technology - Causes harness to conform to Dogs Chest curve Patented Closure Slide Adjustability - (Other copycat harnesses have little or no size adjustment) Our 3 Inch Webbing allows for 3 inches of Size Adjustment