American River Choke-Free Dog Harness - Rainbow Ombre Trachea safe- The Choke-Free patented design pulls only from the chest, never the neck. Many smaller breeds are susceptible to having a collapsed trachea, especially when using a collar. Even regular harnesses can be dangerous for toy and teacup breeds. Don't put your pup's airway at risk with anything but a choke-free harness! Patented Conforming Shape Fit Seam Technology- This unique feature allows the harness to conform to curves even on hard-to-fit dog chests. Patented Closure Slide Adjustability- Most harnesses have little or no size adjustment at the clasp. This unique design allows the clasp to slide along the nylon webbing for a full 3 inches of adjustment. Double D-ring- Most harnesses have only a single D-ring. Furthermore, some companies use D-rings that aren't welded shut. The remaining slit in the metal of sub-par D-rings may open under pressure and the nylon could slip out, leaving your dog at risk for escape. Since the American River Choke Free Harness features two welded D-rings in its design, you're getting double the protection. Reflective strips- All 31 colors of American River Choke Free Dog Harnesses feature reflective strips that can be viewed from the front and the sides to provide visibility duringnighttimeorearly-morningwalks.