The opening at the top of each glass is 2 inches. the widest point in the center is 2 3/4 inches. The base at the bottom is 1 3/4 inches wide. It is 4 inches tall.
They come with a small plastic pouring spout that you push into the top of your beer bottle too make pouring easier. it’s about 2 1/12″ long and tappers to almost a point with a hole down the middle.