These wonderful foam cube kits have won many major awards. Each set comes with six coloured puzzles, flat-packed. They need to be turned into six cubes, each one a little harder than the previous. Once they have been made, the next stage is to fit them all back into their flat packs, which is easier said than done! Multiple shapes can then be made out of pieces from each cube. Enormous fun for hours... and don't think they're just for children - adults get addicted fast! There are four graded packs of six cubes to choose from. The Happy Cube are the original cubes, which are nicely challenging.