Optimal for active play fun. The pop-up design allows for quick setup and takedown, and the included transport bag makes for easy and space-saving storage. Thanks to the pop-up construction, no poles are needed; the crawl tunnel can be set up in just a few seconds and is ready for play. Takedown is just as straightforward and quick. Children can hide in the tunnel or use it as an entrance to their play tent or play cave. When folded, the crawl tunnels have a diameter of just 46 cm, making them easy to take along in the included transport bag for all occasions, such as visits to friends and relatives, vacations, or parties for your children to play.