I know a lot of people complain about tri tops rolling up on the bottom and crushing their ribs. I have the same problem. I used to just double up the bottom once to see if that fixed the problem, but it managed to bunch up pretty bad no matter what. So I took a pair of scissors to the bottom of my binder, cut off about 3-4 inches. I haven't bothered to sew it back up because I can't sew worth crap, but it's so much more comfortable now, and it still binds the same. It might be a good idea to sew up the bottom, but I don't think it's absolutely necessary. I'd suggest anyone trying this with one of their old binders just in case first, before doing this to any other newer binders you might have. I don't understand why the Underworks company felt the need to make the tri tops "NEW AND IMPROVED! 4 MORE INCHES IN LENGTH!", seems kind of pointless.