Outer envelopes made using premium (70b text) wedding quality radiant white paper are perfect for your invitation needs. Envelopes are large size that measure 6 x 8 1/4, the perfect size to fit a card 5 1/2 x 7 3/4. Our largest, standard mailing envelope with its distinguished pointed flap is a statement in elegance for formal invitations both corporate and social. This is a nice fit (slightly roomy) for our A8 cards.