oversized black culatta leather box bagan oversized unstructured shoulder bag, cut from a butter soft 2. 3mm vegetable tanned culatta leather, with a visible layer of subdermal cordovan. the matte black leather features an array of grain and scarring to give some depth to the bag. the unlined leather bag features overlocked hand stitched sides in a tonal 0. 9mm hand waxed Japanese linen thread, deconstructed side panels with our unique lock stitch construction and our signature lock key