Trafalgar"s Cortina collection is made with their signature Cortina Leather. Cortina is a smooth hand polished European vegetable tanned leather. The interiors are finished with leather. The Trafalgar Cortina leather gusset ID card case is constructed with hides tanned and stained giving the leather a smooth hand. The Cortina gusset ID card case is vegetable tanned in an environmentally friendly process. Vegetable tanning allows the casual matte finish to age gracefully and develop a soft luster.