White 6x9 Inches Booklet Envelopes, Thick 28/70 Lb - bulk Value Pack of 100 Envelopes - Great for Mailing Invitations, letters, Documents, And More | 6 x 9 Inches | 50 Per Pack THICK and DURABLE ENVELOPES - made from the Extra Thick business letterhead or stationery weight of 28lb bond / 70lb text paper that greatly holds mailing documents; Gummed Booklet Style Square Flap that provides extra security for document's safe-keeping STANDARD A7 SIZED ENVELOPES - 6 x 9 inches that fit most invitation, postcards, greeting cards, photos, announcements, social and invitation purposes and more; ideal large reply envelope size that fits inside A7, A8, A9 and A10 sizes envelopes PERFECT FOR BUSINESS OR PERSONAL USE - great for enclosing your Save the Dates, DIY Invitations, Thank you cards, Graduation announcements, Do-It-Your-self Greeting Cards, and business correspondence; it can be hand addressed or professionally printed LASER, INKJET and OFFSET PRINTING COMPATIBLE - white-smooth paper finish and packed flat for hassle-free printing of your customized and personalized envelopes for all occasions; it ensures presentable results of vibrant, neat, elegant and professional look BULK SET of 50 - ever ran out of envelopes or stock up for future use as this comes in a bulk set packed in a Re-sealable for a safe delivery and storage; this pack of a 50 will make sure everyone gets the message that surely brightens their day