Ok, so we have now bought 4 of these because the first one was such a hit. These are really nicely made, the weight, the action it's all really well judged and feels like quality. These blocks are great for little or big hands to fiddle with. You can challenge yourself by using the cards that come with it to make different shapes (various levels of difficulty) or just enjoy fiddling with the blocks. There are enough to make a cube roughly the size of a trad Rubicks cube, the box makes it look like more as there is a deck of puzzle idea cards in there too. Seriously, this is a great buy. We always love shopping from Oddballs. I'm sure we'll be back for a 5th soon!