reverse horse culatta leather closed seam bifold walletthe closed seam wallet has been hand cut from a reversed 2. 5mm vegetable tanned matte black horse culatta leather with a visible layer of subdermal cordovan. culatta is a special cut combined of the rear just above the cordovan, the belly middles and the hind shanks, offering a dense structure, tight grain and medium to firm temper. vegetable tanning is a traditional method of treating the hide using natural extracts such as tree bark, for a truly