I was leery about ordering this vanity base sight unseen. The quality of furniture has degraded so much over decades, I am just happy when I order a piece that isn’t particle or compressed board. 
This piece was far superior to anything I’ve ordered online, and even exceeds what you’ll find in local furniture stores. 
I’ve yet to have the Curava countertop installed, but feel certain the base will adequately support the slab. 
I’m also pleased with the increased height and self closing drawers.