Kurgo-Tru Fit Smart Harness: Medium. The five adjustment points and padded chest plate ensure a comfortable and secure fit, while the two steel front and back lead connections offer the best training options for dogs who may like to pull. The detachable seatbelt look is compatible with all vehicle seatbelts, which makes traveling together a breeze. Whether walking or riding, this harness with keep Fido secure and you in control. 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 tru-fit smart harness with a seat belt tether. Comes in a variety of colors. Each sold separately. PVC, BPA and phthalate free. Imported.