Don thanks for comment.
Cardboard dimensions are 65 x 90 mm, just 2 mm more than poker size card. Card edges do not expose.
3/32 ins (2.5 mm) thick cardboard supply an even pressure.
It can be used with tuck box. Just cut the cardboards a little smaller than the tuck case size, e.g. 58 x 82 mm, in that way tuck case do not crush.