I don't like mine, things don't line up great (and it's a bit too small so it's hard to get on. IMO the zipper should have bigger teeth to help with the size issue.
It is the best thing ever, I just made one using an old bra, type in "how to make a handsfree bra" and there is a video on Youtube that shows how to make it. I made it one early morning and love having it!
I use the "Elastic Band Method" from kellymom.com. It is so easy and once you've done it once you can duplicate it in about 2 seconds. Just take a regular nursing bra and add 4 hair twisties and voila...instant hands free bra and it works great. I used it for the full year of nursing/pumping after I had my son. Even during my pumping and driving sessions.
Here's the link: