Useless. We ordered two chairs and one stopped swiveling within the first couple months. Upon further review, the supposedly "new" chair that we paid a premium for, instead of the opened/returned product, was either repaired at some point or manufactured with random screws to fasten the base so it's no surprise we got a lemon and the frame is bent. No help from Wayfair either as the window to return/replace had closed. Thoroughly inspect your "new" products so you don't the wool pulled over your eyes by Wayfair like we did.