Most leather remnants are cowhide and there could be a small percentage of flexible lambskin. We mix high, medium density and very flexible ductile leathers, that way you can cover all your needs. All these leather pieces are remnants from best known leather manufacturer; they are put aside when they make larger styles. Some of them are cut into squared pieces directly from the hide, much larger than a hand and others are scraps with irregular shapes as you see on pictures. NOTE- Color and shape may vary from bag to bag.