We bought two chairs a couple of weeks ago and they are very comfortable. They lock in place in the position you want them and easily release with knobs on the side of the arms.
The chairs were a gift for my mother's boyfriend and from what I've been told he loves them. Says they're very comfortable and lightweight for easy transport.
I bought these chairs for my Mom for Christmas. She is older with not a lot a strength and she was able to recline easily in them. It was very comfortable and I'm pretty sure she dozed off for a few minutes while she was trying them out. Love the cup holder feature, especially since it allow room for more than just a cup. She had leg surgery this week and it was perfect to keep her leg elevated properly. The navy color was very nice.