Mail lite protective postal bags are lined with Aircap bubble material with a special air retention barrier to seal every bubble against air loss for high performance cushioning.Mail lite are easy to write on, with excellent label adhesion. All Mail lite bags have a self seal strip on the lip, after filling remove the release tape and fold over the flap to make a permanent seal.Each envelope has a unique tear strip for quick and easy opening by the recipient. Mail Lite Bag - G/4 - 230 x 325mm (A4/brochure)