So maybe I'm a complete idiot but I am really confused. At the hospital they gave me a ton of abbott and lanisoh 2 and 3 oz little breastmilk storage bottles that screw onto my pump, along with a ton of disposable nipples that screw onto the bottles. I am almost out of the nipples and just want to buy one that is not disposable, but when I look on amazon only the disposable ones have the ring attached. Also I don't understand what you do with the nipples that don't have a ring attached - how do you use those? Sorry I'm sure this is a stupid question.