Purchased this pump brand new to use at work and hardly ever needed it! (I was able to sit and use a plug in the wall pump way more than I thought!) Everything works just as it did when it was purchased. I would estimate the pumps have been used less than 10 times. Listing includes: 2 Willow 3.0 Portable Pump units both 24mm 4 loose milk collection bags (never used) 1 UNOPENED bag of 48 milk collection bags 2 Reusable Milk Collection Containers 1 Charger (works on both units) All instruction booklets 1 Carrying Case (The case can hold both units, charger, milk collection bags) **Pump & reusable collection containers alone retail for $550!** The flange is the only part on these units that comes into contact with the body. They have been well cleaned and sanitized :) Any questions don’t hesitate to ask!