Kurgo-Enhanced Strength Tru Fit Smart Harness: Medium. 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 16 inches and 25 inches, a chest sizes between 18 inches and 28 inches, and weight between 25lbs and 50lbs. This package contains one medium 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.