The fascination, appeal and attraction of magnets, almost as if by some invisible force (see what we did there?), is undeniable when it comes to children and adults. For kids who enjoy building and are curious about the principals behind magnets Geomags is a must-have item for the holidays or a birthday. Kids loved manipulating magnetic fields and creating towers that they could move and spin. This is quite unlike other building sets. These constructs follow the magnetic field that your child controls with the included magnetic stick. There are 146 pieces in this set so you can be sure that there are endless possibilities and thus hours of hands-on play.