From mailing unique wedding invitations, thank you cards, greetings, special announcements, and letters to storing pens, jewelry, receipts, to-do lists, and checks, these white envelopes cater to it all. Appropriate for both office and home use. This pack includes white envelopes made from high quality paper. Each envelope has an open end opening, straight flap, gum closure, and smooth finish.Details:Available in multiple countsWhite4.125" x 9.5" (#10) size28 lb. (105 gsm)Paper