Rototo Pile Room Socks Checkerboard Charcoal / Light OrangeThese slipper socks are characterized by the bold and fun checkerboard pattern. Each pair is made of wool acrylic blend yarn and features brushed soles for excellent cushioning and heat retaining properties. The rubber print on the sole helps prevent slipping. * The surface of the sock is quite sensitive to abrasion and can be worn out easily if you wear it with hard leather shoes. Avoid tumble drying, as it may cause shrinkage.