My middle two sons, aged 5 and 6, sold some of their old toys and saved up to buy the Lego Batcave so they were overwhelmed with excitement and anticipation when the large Amazon box containing it arrived. My four boys are all Lego fiends and the middle two are superhero nuts so this entire series of Lego sets is perfect for them. As always with Lego, the instructions were clear and easy to follow and the boys had a lot of fun constructing the set and seeing the Batcave gradually take shape. They needed a bit of help with some of the more fiddly bits but otherwise they found it easy enough to make almost entirely independently and they never got bored once despite there being lots and lots of building stages. They were also super-excited every time a new minifigure appeared in a bag. They absolutely love the Batcave and have spent several hours already playing with it, imagining adventures for Batman and Robin and staging battles between the superheroes and supervillains. Like all Lego, this set has immense play value and - despite the hefty price tag - represents value for money if your children, like mine, love Lego and superheroes in equal measure. Only two things made me hesitate about giving this product 5 out of 5: the first is the stickers. I really do wish that Lego would print onto more bricks as the stickers are too fiddly for children to manage and are also not as robust as the bricks they are stuck to. The second is that some of the elements within the Batcave are a bit tricky for little fingers to operate, namely the lift in which the Bruce Wayne figure "changes" into his Bat suit and the cell for containing Poison Ivy, especially the latter since it seems to break to pieces every time they open the bars. These are my niggles, however, and not those of my children who are entirely delighted with their purchase.