Brand new Fair Isle Hearts Pet Dog Sweater size L 15-8 inch back length.  Pullover, step in style, yellow & blue fair isle hearts pattern on a white background.  100% acrylic.  Machine wash cold, hang dry.  Size large is recommended to fit dogs with back length 15-8 inches measured from base of neck to tail with a girth around 19.5 inches measured at the broadest point usually behind the front legs around the back & belly.  Please doublecheck your pet's measurements as sizing varies widely amongst manufacturers of pet clothes.