Ruffwear Bark'n Boot Liners -Ruffwear Bark'n Boot Liners will enhance the fit, upgrade the performance, and improve the comfort of our dog boots. Makes putting on Ruffwear boots a cinch. Ideal if your dog has a dew claw. Tapered Cuff Keeps The Boot Liner In Place On Dog's Paws Curved "claw box" Follows Dog Paw Anatomy And Minimizes Bulk Inside Boot Machine Washable 90% Polypropylene/10% Spandex Fibers Wick Moisture, Dry Quickly, And Provide Comfort And Stretch