The aperture on the front of the box, that you can see in the pictures, has a tumbler with a straw, there is also a second front section with just the tumber aperture. It's up to you which you prefer to use.

There is a base insert which your Tumbler sits into and a top insert to fit over the lid section of your tumber, it has a hole in the centre of the top insert for the straw to go through. These inserts help to stop movement inside the box, making delivery of your finished tumbler more secure.

Overall box measurements:- 25.5cm high x 11.5cm square. The inside diameter of the base insert:- 6.7cm The inside diameter of the top insert:- 10cm