This is a mini wallet by Montblanc, crafted in eco-friendly carbon fibre -textured leather made with CO2-neutral tanning processes in black and cassis. The Extreme 3.0 collection is a relaunch of an old favourite - Extreme. The black and cassis Extreme 3.0 compact wallet features six internal card slots alongside a zip pocket and space for banknotes. The Extreme 3.0 eco-friendly compact wallet has optional embossing on the inside. On the exterior, you will find 2 card slots and a press stud fastening that opens up the bifold, where you will see 4CC and a space for banknotes in plain black leather. There is a zip pocket with plain cassis leather on the reverse so you can keep coins, etc.