Why does my unmarked bench save rolling away? I just bought a current Ellston black microfiber chair today from Staples....

I just bought a current Ellston black microfiber chair today from Staples. It feel great but it keeps rolling around as I sit!! I'm on a tile (hardwood) floor. Could this be why? It didn't roll within the store when I tried it on carpet!! Is near anything I can do??? Please help!! It's making me naucious!!
What is the differnce between plain hem pairs...
Answers:    If the parking brake does not work bring off the wheel.
What is the best made furniture?
their is alot less friction on tile than runner, maybe a complimetarry throw rug, or up to date chair in need wheels