This year, Advent will be an unforgettable adventure trip. With Checker Marina, 24 exciting and amazing experiments will take you around the world. Along the route, not only amazing Checker knowledge awaits the little researchers, but also playing cards to collect for fun long after Christmas. Contents: Small gifts for experimenting (e.g. modelling clay, magnets and more), approx. 20 quartet cards to collect and play with, detailed manual with 56 pages.