PURPOSE: To set instantly and to withdraw simply by bending an endless rod material of a spring property in the shape of the figure 8, forming two continued loops symmetrically at both sides of the point of intersection to make a frame, and extending a tent making the point of intersection as the top end.

CONSTITUTION: A long size material of a high spring property is connected at both ends with a connecting tool 3 to form an endless link, and it is turned over and crossed at the center to form in the shape of the figure 8. Furthermore, two loops 12 and 13 are formed opposite on both sides of the point of intersec tion 11 symmetrically. After that, tent pieces 21 and 22 of a water-proof tent 2 are opposed, the tops of them are unified to the point of intersection 11, the loops 12 and 13 are placed along the peripheries of the tent pieces respective ly, and the tent pieces are extended to form side walls 41 and 42. The other tent pieces 23 and 24 are made into the front wall 43 and the rear wall 44 in the same manner. When they are withdrawn, the loops 12 and 13 opposite at both sides of the point of intersection 11 are superposed to make a double ring, and further it is folded in a triple small circule by bending, to store or to carry.