JAM PAPER A8 Passport Invitation Envelopes - 5 1/2 x 8 1/8 - Sandstone - 25/Pack Color: Sandstone Size: A8 (5 1/2 x 8 1/8 inches) Quantity: 25 /pack Envelopes are made of 24lb smooth-finish paper and made of 30% recycled content. Perfect for personal mail, business mailings, greeting cards, announcements, and so much more!