There are two main reasons for giving 3 stars, but neither of which have to do with quality. 1. I was unpleasantly surprised that the growlers I bought didn't come with caps and I needed to have a separate order of just 2 caps. 2. I expected to receive a small envelope with the caps, but instead received a large box with an exorbitant amount of bubble wrap. I'm trying to reduce my waste in general, so this was just disappointing.