Because I use highlighters to mark progress on knitting and needlework charts I had hoped these would be visible without obscuring the type behind them; light-ish would be ideal as I don't mind going over a line again if needed for clarity. OTOH for typical highlighting use these are really good: the chisel point is sharp enough to underline if that's your style and the broad side is a good size to cover regular black type (thin or a color other than black gets iffy). Can't knock the price either!