Ruffwear The Bark'n Boot™ liners are dog socks that enhance the fit, performance, and comfort of dog boots. The technical knit and articulated shape fit your dog's paw anatomy and minimize bulk, making it easy to put the boots on. With moisture-wicking material and a tapered cuff, the Bark'n Boot™ liners dry quickly, provide comfort, and stay in place, even if your dog has a dewclaw. Not sure what size to choose? We recommend selecting the size that matches your dog's front paw boot size. ARTICULATED SHAPE The technical knit and articulated shape conform to the dog's paw anatomy and minimize bulk. EASY TO PUT ON Makes it easier to put on dog boots and makes them more comfortable. TAPERED CUFF The tapered cuff keeps the sock in place on your dog's paws.