Zebra Clickart Knock Sign Pen

Zebra Clickart Knock is an ingenious felt-tip pen with a retractable felt tip. The ink is specially formulated to resist drying for an entire year – as long as you keep it retracted when not in use. The ink remains moist by absorbing moisture from the air. Therefore, it is best if the pen is stored in a room that is not too dry.

Available in 36 colors. Can also be bought in three separate 12-packs.

The pen won the Good Design Award 2019.