4 vibrant, hot colors that are truly washable, will not crack peel or flake off coated poster board or banner paper, ergonomically patented designed bottles, color coordinated caps & labels, easy flow non leaking spring valve, applicator will not dry out, can’t be squeezed out of tubes unless in use, coverage is four to five times of jar paints with equal paint quantity. No mess, no waste, no leak, non toxic!