The seat is ergonomic and sturdy. I felt that the seat could have been more deeper, I am 5’11”175lbs. Also found the arm rest to be a tad bit lower than normal. The swing lock is good but the back support will swing you backwards along with the seat so it’s not really much of a relaxing swing. It’s a very good option for people who want a sturdy and ergonomic chair, definitely value for money.