Kurgo-Enhanced Strength Tru Fit Smart Harness: Extra Small. With five different steel adjustment points, steel nesting buckles and a padded chest plate your pup is guaranteed a safe and comfortable custom fit harness. The extra strong harness offers travel safety as well as ease of use, and the detachable seatbelt look is compatible with all vehicle seatbelts. For neck sizes between 9 inches and 13 inches, a chest sizes between 12 inches and 18 inches, and weight between 5lbs and 10lbs. This package contains one extra small enhanced strength tru-fit smart harness with a seat belt tether. Comes in a variety of colors. Each sold separately. PVC, BPA and phthalate free. Imported.