The quality and comfort of Pillow Paws Terries Slipper Socks makes them the most wearable patient footwear products in the industry. Unlike other manufacturers, the slip-resistant tread is printed on the smooth side of the terrycloth fabric. This allows the ink to “puff” and create a full, robust tread design. The ink is not “lost” in the terry loops – enhancing safety and comfort. Machine washable.