Our Cream A9 Envelopes are made for us with our 2-up flat cards and bi-fold greeting cards! These Cream bi-fold and flat card envelopes are custom made using 28 lb bond / 70 lb text (105 gsm) weight paper. Our Cream A9 envelopes measure 8 3/4" x 5 3/4" and feature a booklet style square flap.