the geomag are perfect to solicit children's attention for hours, which is not the case with many toys. I recommend them for children (boys and girls) from 8/9 years until ... my 13 year old son regret not have enough to do anything he would like! This box is because it concentrates most: Strips and beads. However, it was from several boxes (color versions, pastel, panel, pro) that the game gets really nice because the child has built up a stock of "spare parts" that begins to allow it to really create. (Otherwise, with one box, one quickly turns round). It is a game that ultimately is quite expensive but the expense is spread and there is always an idea for Christmas and birthdays! The price of this box is particularly interesting on Amazon (especially as in traditional stores, there are mainly geomag "kids", with longer strips, and therefore the choice in authentic geomag is restricted sometimes nonexistent) My son loved the colors "frozen" in this case.