Watch the mesmerizing colored droplets float to the bottom as you write, flip over and do it again! This set contains 2 ballpoint pens, 1 blue, 1 purple, both have 2 shades of colored droplets and black ink. Simply twist pen head to extend or retract ballpoint pen, flip pen upside down and then right side up to start the process. Great as a gift or an awesome addition to your desk, enjoy!