Adapter för flasklock från smal till bred hals

I have a stash of narrow bottles from my first baby and this little adapter lets me pump straight into them with my wide neck flange. Snaps on tight, no leaking. Wish I'd bought it months ago instead of buying all new bottles.

Finally, no more juggling bottles and flanges with one hand while my other arm holds a baby. The threads catch cleanly and it doesn't leak a drop during a middle-of-the-night pump. Wish I'd bought this adapter the first week instead of the third month.

It took me way too long to figure out that I needed this little piece, but once it clicked onto my narrow bottle and snapped into the wide flange, pumping directly into the bottle saved me so much washing. The seal feels snug and I've had zero leaks even when the bottle is tilted in my bag.