Hegen bottles are an ideal shape for pouring and mixing formula. I purchased this multipurpose lid to mix formula, and when my storage glass jars were all in use, I used a bottle and lid to store food. My only complaint is, putting the seal back into the lid after washing it can be a bit tricky and sometimes I can't fit it in fully flushed, so the formula leaked when shaking the bottle. But that happens on occasion. I would say, for the most part, it's a great addition to the Hegen bottle access...