DO NOT BUY!  I should've listened to the negative reviews that said it would break.  They were right!!  It will be great at first, but then it breaks completely after a few months and there is nothing you can do to fix it!  As in, the whole base just breaks and falls apart and cannot be put back together.  Company will not send a replacement or try to fix it.  You lose your money and will have to buy a new chair!  DO NOT BUY!  Find another brand!  I am so frustrated!