These are “the LBD of office pens,” says Lizzy Trelstad. “They never leak, and provide a sleek black line. Hard to say if I’ve hidden more tampons or Muji pens in bags, drawers, and back pockets.” Shireen Shakouri uses them for illustrations as well as that all-too-rare-feat: writing by hand. “I find myself *writing* with my *hands* so little now, that when I do, I won’t use pens I scored for free from the roofer or a bank.” But we think Noor Khan says it best: “They write as smooth as butter.”