JAM Paper® Parchment Blue Recycled A10 Invitation Envelopes measure 6 x 9.5 inches each. This full carton contains a total of 1000 envelopes. Each one is made out of smooth, high quality, 30 % recycled, 24lb paper and feature a calming light blue marbled color! The size of these envelopes makes them ideal for enclosing A10 sized and smaller invitations and greeting cards. Each one features a straight flap opening and a reliable, moisture activated gum closure. These envelopes are great for special occasion related mailing purposes, mailing letters from your home, or for sending promotional materials from your business!