The base is sturdy as others said.

I researched this purchase fairly thoroughly, trying to find an affordable throne that had a solid base

Constructedvery well with a strong base and gripping rubber caps to secure it to the floor

I like the throne base very well because it will be light, it will remember the position I select for ever, and it will be sturdy, but the seat is too narrow

then throne won't sink as you are playing

I had to add foam to my roc n soc as well as it bottomed out

It's legs are much more sturdy as