The K9 FORCE Dog Collar set includes 4 collars in different colors, suitable for medium-sized dogs. Made in China by the brand K9 FORCE, these collars are not personalized. With a unit quantity of 4, this product offers a variety of colors to choose from for your furry companion's wardrobe. It is a suitable size for medium sized dogs, fitted for neck sizes between 11.8 inches to 15.7 inches.