Clear Playmat Tube 18 inches with Green Caps Clear Playmat Tube 18 inches with Green Caps Keep your playmats safe, dry and neatly rolled up in this clear playmat tube. Makes it easy for transporting your favorite playmats from game to game. Can also be used for shipping or storage of those import documents, paintings, posters, artwork, maps or other small collectibles. Tubes are approximately 2 inches in diameter, rubber end caps have a snug fit that will stay on tight.