Unfortunately, we are unable to supply envelopes for custom sized cards.
If you are ordering custom sized cards, we recommend purchasing envelopes from a specialist envelope supplier. You may need to look for envelopes that are slightly larger than your cards in order to ensure that they will fit properly. It is also a good idea to consider the size of the envelopes when choosing a custom size for your cards, to ensure that you will be able to source envelopes that will fit them properly.