A4 350x250mm 400gsm (100pcs) - Kraft Rigid Cardboard Mailer Envelopes

100x High Quality A4 400gsm 350x250mm - KRAFT Rigid Cardboard Mailer 

Double fold corners all the way round for increased filling height. No tape or stiffeners needed, will not bend or crush.

Self-seal has peel-off adhesive strip, and also have convenient pull-tab tear strip.

Postage savings due to light weight.

Fully recyclable.