From the link: "Yes, it is a tent that comes with it's own solar panel and integrated, interior LED lights. You can also use the solar panels independently to charge batteries. It's approximately 4-6 hours of direct light to yield 2-4 hours tent light. The 7" (18 cm) solar panel is placed on the top of the tent's hub and clicked into place. The fly is then placed on top of solar panel & tent, and sun will charge the panel through the clear PVC window at the top of the fly. Unfortunately, like most tents, this one is made of petroleum-based materials (PVC and nylon). Surely there's a substitute that could be used out there! The tent comes in as 4-person and a 6-person version"

Who knew?