We have been fans of Ruffwear coats for years and decided it was time to upgrade our powderhound coats. The Furness is better than the powderhound because it is warmer, longer in the torso, has tighter arms, and has draw strings on the tummy and neck, and leg loops to secure the longer end of the coat. The draw string allowed our male chihuahua to be able to pee while wearing the coat. For perspective I had to cut and sew the powderhound coat to meet his needs. It is a little more difficult to put on because it does have to slip over the dog's head, but I think this design probably makes for a warmer product. Clayton, our 17 pound chi - minpin cross has a large torso. He wears and XS which is a bit long for him but keeps him nice and warm. Our 47 pound pittie cross wears a medium. It is also long for her but for a female dog, there is no issue with this at all. She doesn't like coats buts seems to tolerate this one because she knows that it will keep her warm in the snow. Excellent coats!