Tri-Hex® Triangle Mailing and Shipping tubes are stronger than traditional triangle or round packaging and are cost effective. Our patented designed doesn't require any extra pieces or tops and ships to you in one flat piece. This will save you time and money on shipping costs and allows you to store your Tri-He®x mailing tubes flat and assemble when needed. Our Tri-Hex® shipping tubes have a flat bottom design that is conveyor belt friendly, making it easy to scan and cutting down on damage and loss. Our triangle shipping tubes make it easy and inexpensive to ship posters, blueprints, artwork, one-page calendars and other documents