Perfect condition; our rescue pup was bigger than we were told so this never fit him. Size S, Color; Twilight Grey. The Fernie is a technical sweater for dogs, designed for everyday adventures from the trail to town. Advanced sweater-knit fabric has the performance of a technical fleece jacket with the look of a sweater. Cut in a sleeved style with a ful-length zipper, the Fernie offers coverage and warmth on its own or as a layer under other Ruffwear coats for additional warmth.