Pros:
Lots of pieces to make complex shapes.
Great toy idea
lots of fun for me with my kids
educational
Cons:
Very cheaply made.
Magnets are week, just strong enough, but your sculpture will be delicate.
Permanent container boxes are very brittle, and several were broken on arrival.
Magnet balls chrome was already flaking off before opening the package.
Magnet Sticks- cheap cracked plastic on many.
Actual magnets - several are crushed and are magnet dust.
Your hands smell like metal after a short play time.
Hopefully there isn't anything toxic in these.
Summary:
I got these after playing with Geomags brand toy (basically the same toy) But Geomags are expensive, so this one stood out since it looks pretty much the same but is much cheaper for the number of pieces. Bottom line..they work but go for the better quality brands if you can. But these are workable if you are on a tight budget. Bonus, we feel freer playing with these since we don't care if they break or get lost.