Excellent fun for developing cooperative. Great for muscle development. Stimulate the imagination for creative playtime. This new design incorporates or new "padded interior" system, for more comfortable playtime. Use alone, connect several tunnels together for a maze, or connect to other Pacific Play Tents. Half nylon & mesh act as "peek-a-boo" tunnel or for keeping an eye on the kids. These fun tunnels keep kids busy for hours. The tunnel collapses down for easy storage and carrying. Wipes clean with a damp cloth.