This is one of the best tables that I've ever purchased.
As far as I can tell it's solid rubber wood with an oak veneer.
The description says engineered wood but it appears to be solid.
It's a quality veneer.
I can't say exactly how thick but the exposed edges before the legs are assembled makes it look significant.
Before I purchased the table I wondered about these things which is why I'm posting.
Hope this helps someone.