“I bought this for my 7 year old granddaughter and would have given it 5 stars but there is no way to ensure the box stays closed. A small hook is usual on these. I guess that as the pieces are all put inside an elastic then if it opens the pieces will not fall out however I am not sure how long the elastic will last nor if a child, or an adult, will always use such. Indeed the elastic was tight for the final pieces and both I and my granddaughter found it hard to put them in. Good because it makes them secure. Not so good if you have weak wrists and the temptation will always be to miss out the final pieces.”