A jungle gym joint has a joint main body having joint shafts to which a plurality of pipes are connected and a rotary member having a short rod shape to one end side of which the pipe is connected. A folding portion is formed at a bifurcate portion of the rotary member where a flat plate portion of the joint main body is inserted thereinto, allowing the pipe to be folded. A cylindrical cover member is provided on an outer circumference of the folding portion. The cover member includes a restricting wall portion restricting the folding of the pipe by being brought into abutment with the flat plate portion or the bifurcate portion and a cutout portion formed by cutting out the circumferential wall to prevent the abutment of the circumferential wall with the flat plate portion or the bifurcate portion to thereby release the folding of the folding portion.