Educational Colours master mega markers are perfect for young artists featuring jumbo barrels that are easy to hold. These washable master mega markers are safe for children with non-toxic, water-based ink and child safe ventilation caps. These markers feature broad tapered tips for both bold strokes or fine lines. The master mega markers feature 5.8mm sink-resistant nibs that are engineered to sustain heavy pressure when colouring. Perfect for the young aspiring artist to express their imagination!