Love this.  I tried the 'rubberband trick' with my first son and what a pain!  The second time around this has made punning so much easier.

I pump to donate in tandem with my son nursing the other side by simply pulling half of it down.  I've also pumped while working and it really takes my mind off pumping making it really easy for me to relax, focus on work, and therefore get better results.

I am 34/36 E while nursing and the XS/M fits comfortably.