This costume is in excellent condition and has only been worn once or twice by my toy poodle. It measures approximately 10 inches from the base of the neck to the base of the town. The neck measurement when fastened is about 10 1/2 inches around. The measurement for the area that fastens around the stomach is approximately 14 inches. Both of these areas are Velcro so you can adjust the sizing a little bit if needed. The tail on the costume is about 6 inches long.