How big are the measurements? Fiona Chapman August 20, 2021 14:24 Updated Each glass is a small glass of wine. Perfect for learning. The pouches are approx 125ml. Related articles Can I choose the wines? Am I tied into a contract? When will my first By The Glass box arrive? How much is the subscription? What two glasses of wines will I receive? Comments 0 comments Please sign in to leave a comment.