These are 100 % Adjustable Leather Dog Harness made in the USA. We have used beautiful soft feel 5/6 oz. weight 1″ Wide Chrome tanned leather. We use heavy duty Steel hardware and steel rivet with caps. The hardware choice is Gold or Nickel. We have used heavy commercial Bonded Nylon Thread for more durability and strength and it also adds more class to the harness. We use White thread as default color but we do have many more colors to choose from. Please inquire if interested in a thread color other than white. Size is adjustable up to 30 Inches.