Uni-Ball® Vision Elite 0.5 MM Blue Ultra-Fine Rollerball Pen Ideal For Business Travelers Because They Are Designed To Prevent Leakage With A Change In Cabin Pressure. The Uni-Ball Pens Contain Archival-Quality Ink, Which Helps Protect Critical Paperwork, Such As Checks, From Being Altered. Airplane-Safe Pen Engineered To Eliminate Leaks Due To Changes In Cabin Pressure.
