LUMI Petrus Coin Purse, in black, is created using natural vegetable tanned cow leather. LUMI Natural Line leather is finished to emphasise its true texture, so the colour will gracefully change over time with exposure to sunlight and other weather conditions. With our LUMI Natural Line, we return back to origins, to what drew us to leather accessories in the first place: simple, unpretentious design that features all-natural, vegetable-tanned beige leather, with no additional bling.