Experience color like never before. Differentiate yourself with the deep, rich write of BLX black infused colors. The uni-ball Vision Elite is not affected by changes in a plane"s cabin pressure- making it the ideal choice for people who frequently fly for business. And like most of our uni-ball pens, it also features uni Super Ink that helps prevent against check and document fraud. This pigment based ink contains particles that form an indelible bond- it can"t be broken…ever.