If keeping it stylish, calm and subtle is your style, the dark grey collection is more than perfect for you! The combination of modern style make it easy to wear. MUK LUKS' John Slipper will keep your feet Warm, Comfortable all day long.These slippers come in S (8-9), M (10-11) and L (12-13). Hand wash in cold water and lay flat to air dry. Imported.