Contour Flap EnvelopesNo.: CMXEP-003Contour Flap Envelopes feature a deep triangular flap which nearly touches the bottom of the envelope, offset by a smooth curve at the tip of the flap. Contour Flaps give a luxurious feel and standout design to go with any invitation, announcement, or greeting card. The envelopes come in all the standard sizes for invitation envelopes so they will perfectly match the size of all of our invitations.