An equine adjustable blanket system for a horse having a neck, a back, a barrel, a dock, a withers, a chest, a mane, at least one shoulder, a point of said at least one shoulder, a forearm, and at least one scapula is disclosed. The equine adjustable blanket system has a horse blanket and a yoke device. The horse blanket is disposable upon and in contacting engagement with the back of the horse and the yoke device is disposable upon and in contacting engagement with the chest of the horse. The yoke device and the horse blanket being mutually and matingly couplable to each other to form the equine adjustable blanket system.