Perfect! If you need a disposable cup for your espresso, then you're obviously walking around with it, or taking it in the car. If you were home, you wouldn't use a disposable.
But since espresso cups are tiny, they are WAY easier to spill - if your walking around with it, or taking it in the car.
Thus, with a 4 oz. disposable cup, it's essential to use a "to go" lid with it. When on the move, the lid keeps you from spilling it.
And the styrofoam is a great insulator! Your espresso will stay fresh and hot for a good 15 minutes - in case you have to pull your shot and run.
These cups are 2-1/2" tall, and 2-3/4" in diameter at the top. Sold in cases of 80 cups & lids. You'll wonder what you ever did without them.