[UnFleshedOne]

Those black rubber playgrounds (not sure if that's the same) smell like a chemical factory exhaust on a sunny day (you can also fry some industrial-solvent-laden eggs). Not sure about actual health effect, but experience is far from pleasant...

[bombcar]

The ones around here are colored rubber and look like this: https://www.surfaceamerica.com/product/playbound-poured-in-p...

It off gassed for a tiny bit iirc, but once it was open it was fine.

[geraldhh]

looks like a place for toddlers that can barely walk