I happily (well, okay, as happily as possible, given what it is) used (and use) a Medela Pump In Style Advanced pump so I could provide breastmilk for my son and now for my daughter. I am using the same pump that I bought nearly 4 years ago, and man, it's really obviously been USED. The pump itself still works great (so yay for that) but the bag? Not in good shape at all. So I called customer service to ask if there was any way to just replace the bag. Nope. The woman was very nice and offered me 20% off a new pump, but hello, if I had the money to buy a new pump I would not have called about a new bag. I am not about to waste a perfectly good pump (and another $200) just to replace a bag! It's just...wasteful. I mean, it's bad enough that we can't recycle these somehow (given the whole contamination risk thing) so many pumps get used for a few months and then what? Trash? Sent to a family member? What? So I guess I will be making a new bag. Because this is getting embarrassing.