Pack/25 Clairefontaine "Triomphe" Envelopes for A4 Sheets, 4.38" x 8.63" Pack of 25 Clairefontaine self-sealing envelopes 4.25" x 8.5" for use with A4 size sheets The ultra smooth Clairefontaine paper was developed for fountain pens Opaque grey lining for extra security Made in France