The top board is made of 6 mm sunlight board. The frame of the shelter and the frame of the roof are all made of 2mm steel tube painted on surface The side board are made of acrylic 8mm thickness The chair are made of 2mm steel board and 2mm steel tube painted on surface The shelter can be taken apart for shipping and assembled easily Reference size(L/W/H:mm) 2000/2000/2040