For those who take their colouring seriously, the Seriously Fine Marker set is the perfect choice for your colouring needs. Designed for adult colouring enthusiasts in mind, this set of felt tip markers features a super fine tip at just 0.7mm. These markers are perfect for bringing stunning colour to ultra detailed colouring books. Seriously Fine Markers have a wide variety of colours; 36 colours in a set. The barrels are triangular shaped so they're a great ergonomic fit and won't roll off your colouring book or tabletop.