Our Spiked and Studded Leather Dog Harness is available in Black or Burgundy leather. This heavy-duty 2-ply Latigo leather dog harness has Nickel-plated studs and 1/2 inch steel spikes. There are 5 metal buckles on this harness for adjustment. 2 are on the neck strap, 2 are on the body strap and 1 is on the strap that fits between the legs. For correct size measure your dog. Neck: Measure around the dogs neck. Chest: Measure 4 inches behind the front legs all the way around the dogs body. MADE IN THE USA! Medium The chest strap will adjust 28-34 inches. The neck strap will adjust 19-25 inches. Large The chest strap will adjust 31-37 inches. The neck strap will adjust 21-27 inches. X-Large The chest strap will adjust 38-45 inches. The neck strap will adjust 22-28 inches.