Our heavy duty 2-Ply leather harness with studs is made with premium latigo leather. Each strap has 2 buckles for adjustment, one on each side. There is also a buckle on the strap that fits between the dogs front legs. For correct size measure your dog. Neck: Measure around the dogs neck. Chest: About 4 to 5 inches behind the front legs measure all the way around the dogs body. MADE IN THE USA! Medium:$65.99 The chest strap adjusts 28-34 inches. The neck strap adjusts 19-25 inches. Large: $69.99 The chest strap adjusts 31-37 inches. The neck strap adjusts 21-27 inches. Extra Large: $70.99 The chest strap adjusts 38-45 inches. The neck strap adjusts 22-28 inches.