The Deck to Deck Tube with Window offers a fun crawl-through tunnel that will let your play structure reach new levels of fun. Children will love it. Two plastic panels that attach to the ends of the tube are molded to look like a series of wooden planks that have been put together. The tube is made from strong and durable plastic, and it is molded to look like a realistic and authentic wooden tree trunk. From the plastic molded tree trunk tube stems a plastic molded stump that has a bubble window attached to it. Children will enjoying looking out of this window and at the sky as they crawl through the tube in their play. Sometimes children can feel claustrophobic in tunnels, so the window feature of the Deck to Deck Tube with Window is a great way to ensure that children won’t feel claustrophobic while enjoying your play structure.