I like the chair it was easy to put together and it's comfortable if I'm sitting all the way back in it. If I sit up towards the front of it it does feel like I'm slipping off.
You have to read the instructions very carefully and put the chair together firmly. Don’t leave any nut and bolt loose. Don’t use other tools except those which are provided with the chair. Bolt every nut firmly. Once put together firmly I believe this is one of best chairs you will enjoy sitting in for hours.