It is a 3 meters diameter spherical structure in aluminium covered with a resistant waterproof membrane designed to hang up on trees or placed on the ground with its adaptable feet. A cocoon tree empty weighs only 240 kilos. So it is realy easy to instal it between 2 or 3 trees. It’s rigged up with ropes and secure by nets. We climb up to a cocoon tree by wooden walkways or nets. Round top & lower node : aluminum. The top arc : aluminum-stainless steel. The lower arc with fastenings for the floor. The horizontal arcs short : aluminum-stainless steel. Connectors arcs, metal nodes, zinc coating. 1o mm plate, water-resistant laminated solid panel. Tent membrane top & lower : 630 g / m2. Removable entrance – zipped and a transparent skylight pvc window. Two windows – zipped and transparent skylight pic. External holder cocoon (rack) bolts, nuts, racing – the mattress is not included in the price. Production time – 3 weeks.