19821 Black Watererase 4.5 oz

The included pen writes smooth and clean, and the ink really does vanish with just a damp cloth—no scrubbing needed. This 4.5 oz bottle has lasted me through weeks of daily notes without running dry, which is a great value for the size.

The 4.5-ounce bottle is a solid size for someone who writes a lot, and the ink wipes off cleanly with just a damp cloth. I've been using it with the included pen for daily notes, and it's genuinely convenient not having to worry about permanent marks.

The free pen that comes with it is actually what sold me—it writes smoothly and the ink erases cleanly with just a damp cloth. The 4.5 oz bottle is a solid size, so I don't see myself running out anytime soon.