Great at football games - 'Gooo lumbar comfort!'
I use this at High School football games and it is very comfortable for long periods.  The setup is key (getting the strap lengths right); and connecting the clip between your knees.  Once you get it adjusted to your liking it is very comfortable.  I recommend taking the time to adjust it correctly before deciding that it's uncomfortable or difficult. Once you get it set it's a snap to set up again and again.
Rating: 5 stars