I have 4 season tickets and have added the seatbacks for about 15 years now. They are not the most comfortable things in the world, as a matter of fact, sometimes I leave the seat folded down for a while. BUT, BUT....you don't buy them for comfort.....you buy them to insure that you get every inch of your seat location...and that is really the only way to insure that. They cost about $44 per seat per season, and they put them on for you. I don't think anyone but the season ticket owner can request that purchase, and I don't think you can do just for one game, or for selected games. Those chair backs are the best $160 I spend in Knoxville every fall, no lie.