Dickens Closet Cable Knit Turtleneck Sweater for Dogs Size

Darling red and white knit dog sweater. Worn by my Pomeranian when he was a puppy. The sweater is 6 1/2 inches from neck to bottom and a 12 inch girth And is meant for a small dog. There is no label that tells the size but given what the measurements are it would be best suited for a small dog.