Sending posters, artwork, or prints in the mail? Keep them safe from bends and creases with these REALPACK Postal Tubes! Each tube is made from strong brown Kraft cardboard, which is tougher and looks more professional than flimsy recycled tubes. They measure 3 inches in diameter and are 890mm long (that's about 35 inches), which is perfect for rolling up A3, A2, A1, or even A0 size posters. They come with secure white plastic end caps that snap on tightly to keep your contents safe inside. You can use them over and over again, and they're not just for paper—they're great for storing or mailing anything long and cylindrical, like banners, fishing rods, or blueprint plans. A reliable, simple solution for hassle-free shipping.