The Pilot FriXion Zone retractable erasable rollerball pen uses brilliant thermosensitive ink that erases cleanly and completely via friction. The hidden eraser, protected by a screw-on cover, avoids interfering with the retract mechanism actuated by the pocket clip. This pen features an all-new V-shaped ring, an elastomer grip, and a smooth body. All barrel colors are fitted with a blue ink refill, and refills are available in a variety of ink colors. Notably, FriXion ink can reappear if the paper is exposed to freezing temperatures. The pen has a 0.7 mm nib size with a medium line width, and it is refillable and suitable for left-handed people. It measures 146 mm in depth, 17 mm in height, and 17 mm in width, weighing 14.5 g.