Pigskin leather is a medium-weight leather used for many items including
gloves and jackets. Generally it is softer than other leathers, but it
can be finished in the same way so it is difficult to identify a pigskin
article simply by looking at it. Using a microscope, the hair follicles
of a pig go vertically right through the skin. With a cow hide the hair
follicles are at an angle.
Written by The Vintage Fashion Guild