What Ages Are These Boxes Recommended For?
You, the parents, are better equipped to answer that than anyone. It is very hard for us to determine when or if a toy or toy box is appropriate for your child. Children develop at such different rates and what is good for one child may not be good for another. In general, these boxes are a perfect addition to any room at any age. Children always have toys and there is always a need to store them. You should remember, however, that children always need to be supervised no matter what they are playing with or on.
As a general rule, if your child falls into the normal height/weight chart, they should be able to enjoy climbing in and out of the cab well into the 4 year old range. After that, the toy box will continue to be an amazing piece of furniture that they can enjoy for years to come.