San Pellegrino500Ml Pet 16.9Oz - Pack Of 24

Are the bottles glass or plastic?

Are the plastic bottles bpa free? they are not labeled as such.

A 24-pack for $42.20?! That's outrageous. It costs less than half of that at Costco. Why is this pack so expensive on Amazon?

Is this a "fizzy" water? I know that the term is "carbonated" and I don't see that it says that. Thanks.