Fully adjustable dog harness. Steel nickel-plated buckles and rings. Durable 2-Ply Latigo leather. 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: Chest Strap adjusts 26"-34" Neck Strap adjusts 14"-22" Large: Chest Strap adjusts 35"-42" Neck Strap adjusts 17"-24