3m Flag pen and highlighters Flag Pen and Highlighters, Flag Refill Pads,Yellow Highlighters, 3 per Pack Get yourself organized with this highlighter/Post-it® Flag combination. The convenient design means you`ll always have flags at your disposal—no time spent searching. Jot down a note or highlight an important passage, then flag it for later reference. The removable and repositionable flags are protected with a twist rotating cover. Loaded with 50, 3/8" wide flags.