I agree with everyone, this does exactly what it's made to do and does it very well.  The velcro to adjust the size is super sticky and I can see it working for a very long time (or forever).  I set the velcro where I wanted it and use the zipper in the front to put it on and off.  I use 5 oz bottles and I don't need to support the bottles at all when they are full.  This bra holds everything in place the entire time I am pumping, I don't really see a reason to use the straps they came with since there's plenty of support without them.  I highly recommend this bra for anyone pumping at work.  I used to pump one side at a time and always felt rushed since I had to limit each side to 10 minutes.  With this bra I can pump both sides fully in less time.