Envelopes A7 (5.25"x7.25" for 5x7 cards) - IVORY 50 Pack Wedding Invitation A7 Size Envelope (5 1/4" x 7 1/4") Ivory Wove 24lb bond / 60lb text (90 gsm) Paper Stock 2" Square Flap 50 envelopes per pack 25% cotton and paper blend