4 lbs not as much as I thought. It's a good mix of things and I'm sure my son will be creative with what he builds but there were a few big pieces like half a boat, some items need to be held together. Also, the Legos were in the box that was shipped and didn't come home unscathed. I don't think we lost much but it would probably be better in ziplock gallon bags or something. Also, there was some scattered debris in the mix as well as some that a dog could get caught on.
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