FeaturesThese Rollerball Pens have erasable thermo-sensitive inkAllows you to erase any mistakes you make using the rubber on the end of the penComfortable gripMade of 50% recycled materialPack includes two black pens, one red pen and one blue penThe Pilot FrXiion Set2Go Rollerball Synergy Clicker Pens (Pack of 4) have erasable thermo-sensitive ink which allows you to erase any mistakes you make using the rubber on the end of the pen. These rollerball pens are ergonomic and comfortable with a grip to help you control your pen. To help you do your bit for the planet, they are made of 50% recycled material. These pens have Synergy technology for precision and the pack includes two black pens, one red pen and one blue pen.