Fiebing’s signature product. Used all over the world on fine saddlery, boots, shoes and other smooth leather articles. Cleans leather and lubricates the fibers to prevent brittleness, all the while maintaining suppleness and strength. What is the difference between the Yellow and White Saddle Soap? Traditionally the yellow paste was for use on saddles and tack, the white paste for use on shoes and boots. That said, it was more for the consumer peace of mind as no color is imparted on the leather from the yellow paste. Think of bar soap you use on your hands, sometimes it is white, other times yellow. Neither will transfer color and both will clean and condition just the same.