These Square Postal Tubes from ColomPac measure 430x108x108mm and provide rigid and robust protection, keeping your important documents safe from tears, creases and folds. Unlike typical round postal tubes, these square tubes offer lower postage costs as they’re easy to handle. Supplied flat to save space in your packing environment, ColomPac postal tubes are a quick and easy to assemble and seal with the integrated self-seal adhesive strips. Features include: Supplied flat Self-seal adhesive strips – no need for additional adhesives or packing tape Tear open strip FSC Certified and Climate Neutral Recycled, recyclable and biodegradable