black reverse culatta open seam cardholderthe bifold cardholder has been cut from a butter soft vegetable tanned washed and tumbled 3. 2mm reversed horse culatta with a visible layer of shadow cordovan and a rotten corpse matte black dye treatment. vegetable tanned leather is an ancient artisanal process that hinges on the delicate balance between timing and temperature. like a fine aged whiskey time is key, the careful balance of time allows the natural tannins such as tree bark to infuse,