How big are the measurements? Fiona Chapman May 18, 2021 08:32 Each glass is a small glass of wine. Perfect for learning. The pouches are between 100 - 125ml. Related articles Can I choose the three wines? Am I tied into a contract? When will my first By The Glass box arrive? How much is the subscription? What is By The Glass? Comments 0 comments Please sign in to leave a comment.