The casters on the chairs are too small to bear the weight of a person without crushing my wood floor. This caused my wood floors to be crushed under the weight of the casters even with my children rolling around on them.  The floor damage is not repairable and  goes all over the basement.  It would cost many thousands to correct.  If it was a problem with the floor the previous owner's game table and chairs would have left similar marks but didn't.  I took photos and Wayfair has been excellent in handling my complaint. update: this problem happened on hard oak floors too.