The Vision Elite Fine Rollerball features \"Airplane Safe\" technology which prevents leaks on aircraft with changes in cabin pressure, making it the perfect pen for frequent travellers. The uni-ball Vision Elite contains uni Super Ink, which is fade resistant, water resistant and tamper proof. A unique \'uni-flow\' system ensures a continuous flow of ink right down to the last drop. . Medium 0.8mm writing line. Featuring airplane safe technology; ensuring you have no in-flight leakages. Ultra smooth, fountain pen like performance. Executive appearance at an affordable price