Printed on slightly thickened paper to give you a very realistic appearance
Inside of the boxes is printed as well with brown cardboard texture, so the boxes can be displayed opened as well
Cut out with a really sharp (preferable new) knife and steel ruler
Be sure to cut out the thick white or black lines between the top and bottom flaps as well, it will allow you for a better assembly with cleaner end-result.
After cutting the entire outline of the box, give 1 cut to the left of the thick line, and 1 cut to the right, then use the tip of your knife and press it where the line is still attached to the box, and swipe the knife sidewards to remove the piece
For easier bending, it is recommended that you use a knife + steel ruler to very gently move over the bending lines. Be sure NOT to press too hard as these lines should not be cut. This will result in nice and sharp bends.
For colour boxes you can slightly paint the edges in the matching colour (once you are finished with gluing the box together) to remove the white paper colour