Snopake 12814 zippa bag s a4 plus assorted colours red orange blue green yellow pack 25 snopake zippa bags are manufactured from polyethylene which is more commonly known as low density polythene ldpe polythene is durable and water resistant making snopake zippa bags suitable for frequent use in the most challenging environments ideal for schools office home and industry features ideal for filing storage schoolwork and presentation strong long lasting metal zip pull on side hu