JAM Paper® Parchment Natural Recycled 4Bar A1 Envelopes measure 3 5/8 x 5 1/8 inches in size and are made out of smooth, high quality, 30% recycled, 24lb paper. There is a total of 25 envelopes in this pack. Each one features a light brown natural parchment color that will make your mail look unique, refined, and professional. To keep the items placed inside of them secure as they travel through the mail, these envelopes have straight flaps and reliable gum closures. These small envelopes are the ideal size for enclosing 4Bar sized invitations, Thank You cards, RSVP cards, save the dates, and more! Use them for your next special occasion mailing need.