This GIANT 22" diameter, 9 foot extended length tunnel provides hours of creative fun indoors or out! Even take your dog or cat with you on the fun tunnel adventure! This new padded interior tunnel is constructed of spring steel with a sturdy nylon cover and may be used with other Pacific Play Tents or tunnels. Flame retardant 70 Denier nylon. VELCRO(r) brand closure attachment on one end for connecting multiple tunnels. Tunnels are the best for crawling around. From room to room, connect several tunnels together and make a never-ending maze as you slither around corners or pretend that you are on a "secret mission". These tunnels promote the use of a child's imagination while helping develop motor skills and muscle strength. These super fun tunnels teach kids cooperative interaction. Tunnels fold down into themselves for easy storage and have secure ties to keep them closed. Carry them anywhere and just untie them for immediate playtime fun.