So this is a little bit awesome - it amused us for far longer than it probably should have! Boys and girls will be amazed at what they can create with this awesome art set including x3 Tri-markers, x20 drawing paper, x1 3D paper glasses. To use, kids (or bored grown-ups) draw their own design and watch it come to life through the 3D glasses. Magic! The Hamleys 3D Tri Colour Markers is suitable for children aged 3 years and over.