This push button antibacterial ball pen in ABS is more than just a writing tool. This pen has a special antibacterial barrel that contains a special additive (nano silver) that prevents bacteria from colonizing the surface of the pen. On top of that, it has an empty refillable spray container on the top. You can fill this with your own hand cleanser liquid. This way you always have a pen with you and something to keep your hands clean. ISO 22196. This pen has blue ink.