New. Open box. By ThinkPet. We have the harnesses in Small, Medium, Large, and Extra Large. The harnesses are adjustable but tend to run a little large. We do have samples that you can try on your dog. In Extra Large, we have yellow and black. In Large, we have yellow, black, and blue. In Medium, we have blue, black, and yellow. We only have 1 small left and it is black. Price is for only 1 harness. Please specify what size and color you are interested in.