The Paper Mate InkJoy 100 Cap ballpoint pen, in blue, is a ballpoint pen with InkJoy ink from Paper Mate, one of the world's best-known brands of writing materials. InkJoy ink is formulated to write with less pressure and greater fluidity than conventional ink, reducing hand fatigue during writing, and the cap protects the tip when the pen is not in use, preventing it from drying out. The blue color is a preferred choice for those looking for a simple and reliable pen for everyday use at home, school, or the office.