This table looks OK. Not fabulous, but serviceable enough for outdoors for it to not be worth the hassle of returning it.  Not sure what it's made of but there is no way it could be concrete as described. I have concrete planters that aren't solid for obvious reasons, since the dirt has to go somewhere. They are WAY heavier than this. I suspect this is some type of composite...
All in all, not worth the trouble of returning since I can use it, but I'd never order it again.