Backyard Obstacle Challenge offers 40 feet of challenge obstacle entertainment in one unit. The inflatable play structure begins with a front-loading obstacle entrance, taking participants through tunnels and pop-ups to facilitate maneuvering skills and build confidence. The challenge obstacle then leads to an exciting front-exiting climb and slide, all to guarantee hours of enjoyable physical activity. Each inflatable play structure has mesh windows for easy viewing, and is constructed of the fire-resistant, lite n' strong? vinyl for easy portability, durability and safety.