WASTE OF MONEY.Not fond of this chair. would have returned it if I could I am 81 yrs. old and just unable to re- pack it to ship back. Don't know what kind of material it is covered in but is prickly and even pokes thru clothing I put a cover over it and it works its way thru anyway. It only lowers to 14'' off the ground so my feet won't touch the ground. padding is hard as a rock and have to use a pillow on it, arms are very narrow. Has had me in tears as I really need a comfortable computer chair as I spend a lot of time in it.