These very high quality 120gsm C6 mid yellow colour peel and seal envelopes are supplied flaps closed and made from premium Clariana paper. Clariana have been making creative papers since 1892. The peel and seal flap on these C6 envelopes have a 5 year shelf life. Suitable for digital and laser printing. Manufactured from sustainable forest products these yellow C6 envelopes add an elegant and distinctive touch to any project.