Oh, I wanted to add, when you get them there's a white ring on the neck below the cap. That's there to keep the cap from piercing the bottle and exposing it the air. So, you remove the white ring, then screw the cap down to open the bottle. Try these to see if they work for you. In the photos you can see that white ring I mentioned. Also, they're not totally filled to the top but they DO contain 2 ounces per bottle.