I subscribed the 6-9 box for my grandson (6) and the 3-6 box for my granddaughter (4). They’ve been a huge hit with the kids because the contents are fun, engaging and multi-faceted. They absolutely love getting their own mail. Their parents are really happy too because the contents are good quality, everything needed is included and the kids keep going back to play with contents. They read/reread the books. 😊 This makes me the SHEro grandma!