Educational Colours Mega Markers Box 288 feature jumbo barrels that are easy to hold. The washable Master Mega Markers are safe for children with non-toxic, water-based ink and child safe ventilation caps. The markers feature broad tapered tips for both bold strokes or fine lines and 5.8mm sink-resistant nibs that are engineered to sustain heavy pressure when colouring. 12 vibrant colours in the range. Perfect for the young aspiring artist to express their imagination!