GO-BRITE LIQUID HIGHLIGHTERS, FLUORESCENT, FOUR-COLOR SET. Ink tank holds free-flowing liquid, permanent fluorescent ink. Barrel has a clear window to monitor ink supply. Will not smear, smudge or fade. Cap has a plastic clip. Liquid ink delivers longer write out than reservoir style markers. Push down tip to restart ink flow if left uncapped, SET of 1 (10 SETS PER PACK)