I hated that the stock cupholder inserts would not accomodate a normal coffee mug without removing both.  I made these so that you can leave one in and have room for the coffee mug handle.  This way your passenger can still have their LaCroix and have a place to put it.  As-is, they are a nice snug fit, if you print them at about 95% they sit a little looser...up to you. Print in ABS since it will go in the car.