JAM Paper #9 business colored envelopes bring the best out of your mail with professional style. These envelopes are sure to grab recipients' attention while keeping a sophisticated presentation! Each envelope is made out of smooth, high quality 24 lb. paper and measures 3.875" x 8.875" in size. Send business correspondence, invoices, notices, announcements, checks, letterhead, statements, direct mail, letters, invitations, and more! Each envelope features a booklet opening, refined commercial flap and features a moisture-activated gum closure to ensure inside contents stay safe. Details:Available in multiple colors3.875" x 8.875"24 lb. paper50 envelopes