THICK AND DURABLE ENVELOPES – Made from the most popular business letterhead or stationery weight of 24lb Bond / 60lb Text (90gsm) paper. It's thick and sturdy with high opacity and gummed booklet style square flap that provides extra security. STANDARD A6 SIZED ENVELOPES – Measures 5.25 x 7.25 inches and fits any 5 x 7-inch letters, postcards, greeting cards, invitations, photos and more! PERFECT FOR BUSINESS OR PERSONAL USE – Great for enclosing your Save-the-Dates, Invitations, Greeting Cards, Thank You Cards, Birthday Cards, Announcement Cards, Postcards, Formal Business Greeting Cards. LASER, INKJET and OFFSET PRINTING COMPATIBLE – Envelopes are blank with a White and smooth paper finish which ensures a clean, crisp and professional-looking print. BULK SET OF 1000 ENVELOPES – Stock up for future use and never ran out of envelopes again with this bulk set of 1000 A7 Envelopes packed in a sturdy box for a safe delivery and storage.