Title: Very poor design, flimmsy at best
Review: This marble run, and similar varieties by Quercetti sold by Amazon, Target, and other stores, is terrible. The plastic pieces do not stay together. An ADULT will spend almost all of their time constantly re-assembling falling down sections they attempt to put together. Assembly for a child of 4+ (age recommendation by the manufacturer) is impossible. I've used marble runs from other manufacturers and have not experienced this level of poor design. However, I've never seen a marble run that is made so that the pieces connect solid and certainly not one that can be assembled by the recommended age. I believe in general they are not worth the effort and time trying to get them together and to stay together. Do something else that's much more interactive and satisfying with your child.
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