100-PACK - 3.625" x 5.125" A1 size Kraft envelopes, for use with 3.5" x 5" invitation cards, RSVP cards, gift cards, and items 3-1/2" x 5" and smaller; with square flaps and pull-strip adhesive closure. STURDY - 132 gsm/35 lb. bond Kraft paper made of unbleached paperboard that is naturally brown in color; keeps enclosed items discreetly guarded SELF-STICK SEAL - Flaps have adhesive border for secure closure of envelope PRINTER-FRIENDLY - Use your printer's envelope-printing settings for direct-print addresses right on the envelopes MULTI-USE - Use to mail and protect 3.5" x 5" A1 size cards, photos and other inserts 100-Pack of 132 gsm/35 lb. bond Kraft envelopes, A1 Size (3.625" x 5.125"), for use with invitation and RSVP cards, gift cards, cash, and items 3.5" x 5" and smaller; with square flaps and pull-strip adhesive closure.