TAUPE The Professional Gear Slim Mini fountain pen is a shorter version of the Professional Gear Slim. When capped, the Slim Mini is 106 mm in length - or 18 mm shorter than the Slim. However, when posted, it is only 11 mm shorter. This fountain pen proves to be a perfect choice for those who desire a compact size fountain pen and want the quality and feel of a slim-sized Professional Gear for pure writing performance.