I am so upset with these chairs. First, they are not oversized. I am 5'2   120lbs and it fits me like a glove with little room to spare. Sitting all the way to the back of the chair, my feet fit flat on floor. They are definitely notoversized at all. They are very hard too. The massage is just vibration. I would send these back in a heartbeat but I don't want to pay return shipping. Do yourself a favor and don't buy these. They are awful! I bought 2 so I'm stuck with them.