The Ruffwear Fernie is a technical sweater for dogs, designed for everyday adventures from the trail to town. Advanced, sweater-knit fabric offers the look of a sweater with a fleece interior, offering the warmth and performance of a fleece jacket. This sweater can be worn alone or layered underneath other Ruffwear coats for additional warmth. Our sleeved style jacket with a zipper on the left side provides full coverage for maximum warmth.