When I was searching for new patio chairs, there was one thing and one thing only that important to me. Pitch angle. Yes, the angle and pitch of the back of the chair. After researching ergonomic best practices, I calculated that 67 degrees is the optimal seated position for someone that is my height and weight. I used online chair schematics and a protractor to confirm that these chairs indeed have a 67 degree pitch angle measurement prior to my purchase. Very pleased, no slouching here!